Case study: Sharing economy & product-as-a-service — a startup-to-enterprise scale story

When Rent the Runway filed its IPO prospectus in October 2021, it disclosed that its shared clothing platform had served more than 2.5 million unique subscribers since launch, displacing an estimated 1.3 million individual garment purchases annually and diverting roughly 217,000 metric tons of textile waste from landfills over its operating history (Rent the Runway, 2021). By 2025, the company's active subscriber base had grown to 175,000 paying members generating $312 million in annual revenue, establishing the clothing rental model as a viable alternative to ownership for a meaningful consumer segment in North America. The trajectory from a 2009 Harvard Business School project to a publicly traded enterprise offers a detailed map of the operational, financial, and behavioral challenges that product-as-a-service startups face as they scale.

Why It Matters

The sharing economy and product-as-a-service (PaaS) models represent a structural shift in how consumers and businesses access goods. Rather than purchasing and owning products, users pay for temporary access, reducing the total number of units manufactured and extending the useful life of each item. The Ellen MacArthur Foundation estimates that shifting 20% of durable goods consumption to access-based models could reduce material extraction by 80 million metric tons annually and lower associated greenhouse gas emissions by 120 million metric tons of CO2 equivalent by 2030 (Ellen MacArthur Foundation, 2023).

In North America, the sharing economy generated an estimated $185 billion in gross transaction value in 2025, spanning transportation (Uber, Lyft), accommodation (Airbnb), clothing (Rent the Runway, Nuuly), tools and equipment (Hilti Fleet Management, United Rentals), and enterprise assets (HPEFS, Schneider Electric's asset-as-a-service programs). The sector grew at a compound annual rate of 18% from 2020 to 2025, outpacing traditional retail growth by more than fourfold (PwC, 2025).

For sustainability practitioners, the appeal is clear: shared models increase asset utilization rates from the typical 5 to 15% for personally owned goods to 40 to 70% for shared assets. Each shared unit displaces between 3 and 12 purchased units over its service life, depending on the product category. However, the path from startup proof-of-concept to enterprise-scale operation is littered with failures. Understanding how successful companies navigated scaling challenges provides actionable lessons for entrepreneurs, investors, and corporate innovation teams evaluating PaaS strategies.

Key Concepts

Product-as-a-service models fall into three broad categories. Rental or subscription models provide consumers temporary access to individual products for a fixed fee, as seen with Rent the Runway or Grover (consumer electronics). Pooled access models share a fleet of assets across multiple users on demand, exemplified by Zipcar for vehicles or Headspace for office equipment. Enterprise PaaS models restructure B2B procurement, with manufacturers retaining ownership and charging customers based on usage or outcomes, as Hilti does with its tool fleet management program and Rolls-Royce does with its "Power by the Hour" jet engine leasing.

Regardless of category, all PaaS businesses must solve the same core operational challenges: reverse logistics (getting products back from users efficiently), asset maintenance and refurbishment (keeping shared products in serviceable condition), demand forecasting (matching supply to usage patterns), and unit economics (ensuring that the lifetime revenue from a shared asset exceeds its total cost of ownership including acquisition, maintenance, cleaning, transport, insurance, and depreciation).

What's Working

Rent the Runway: Subscription Clothing at Scale

Rent the Runway's journey from a pop-up event business to a publicly listed subscription platform illustrates both the potential and the difficulty of scaling sharing models. Co-founders Jennifer Hyman and Jennifer Fleiss launched the company in 2009 with a straightforward hypothesis: women would rent designer clothing for special occasions rather than purchasing garments they might wear only once.

The initial model was event-driven: customers rented a single dress for a four-day period. Revenue per transaction was low ($50 to $150), customer acquisition costs were high, and utilization rates on inventory were unpredictable. The company pivoted in 2016 to a subscription model called "Unlimited," offering members access to a rotating selection of clothing and accessories for a monthly fee of $159 (later restructured into tiered plans ranging from $89 to $235 per month). This shift transformed the unit economics. Subscription revenue became predictable, customer lifetime value increased from an average of $280 per year to $1,400 per year, and inventory planning improved because subscriber demand patterns were more stable than event-driven rentals (Rent the Runway, 2023).

By 2024, the company operated a 300,000-square-foot automated fulfillment center in Secaucus, New Jersey, processing 250,000 garment shipments per month. Each garment undergoes industrial dry cleaning, quality inspection, minor repairs, and repackaging before the next rental cycle. The reverse logistics operation handles a 95% on-time return rate, with the average garment rented 15 to 20 times before retirement. Retired garments are sold through the company's resale channel, recovering 10 to 25% of original acquisition cost (Rent the Runway, 2024).

Hilti Fleet Management: Enterprise Tool Sharing

Hilti, the Liechtenstein-based power tool manufacturer, launched its Fleet Management program in 2000, offering construction companies access to a managed fleet of tools for a fixed monthly fee per tool rather than purchasing equipment outright. By 2025, more than 350,000 customers worldwide used Fleet Management, representing approximately 40% of Hilti's total revenue of $7.4 billion (Hilti Group, 2025).

The program succeeds because it solves genuine pain points for construction firms. Tool theft accounts for $1 billion to $1.5 billion in annual losses across the North American construction industry. Tools break, go missing, or sit idle on job sites. Hilti's model replaces these unpredictable costs with a fixed monthly fee that includes tool replacement, repair, and calibration. Customers report 20 to 30% reductions in total tool-related costs and significant time savings from eliminating procurement, maintenance, and tracking tasks. Hilti benefits from higher customer retention rates (95% renewal rate for Fleet Management customers versus 60 to 70% repurchase rates for transactional customers) and predictable recurring revenue streams.

Grover: Consumer Electronics Subscriptions

Berlin-founded Grover expanded to the US market in 2021, offering month-to-month rentals of consumer electronics including laptops, smartphones, gaming consoles, and cameras. By mid-2025, Grover served over 700,000 subscribers across Europe and North America, with a product catalog exceeding 5,000 SKUs. The company's model allows consumers to access the latest technology without the commitment of purchase, with monthly fees ranging from $19 for basic accessories to $150 or more for premium laptops.

Grover's contribution to sustainability is measurable: each device rented through the platform is used by an average of 3.2 consecutive subscribers before being refurbished and sold or recycled through certified e-waste partners. The company reports that its model extends the average useful life of consumer electronics from 2.7 years (typical for owned devices) to 5.1 years, reducing e-waste generation by an estimated 12,000 metric tons annually across its customer base (Grover, 2025).

What's Not Working

Reverse Logistics Costs

The largest operational challenge for PaaS companies is reverse logistics. Moving products from users back to fulfillment centers, inspecting them, cleaning or refurbishing them, and redeploying them to the next user creates a cost structure that has no equivalent in traditional retail. Rent the Runway spent approximately $70 million on fulfillment and logistics in fiscal year 2024, representing 22% of total revenue. The company's path to sustained profitability has been hampered by these costs, with the company not achieving consistent GAAP profitability until Q3 2025 after years of operating losses.

Transportation costs are particularly challenging. Two-way shipping for a single garment rental costs $8 to $14 per transaction. Dry cleaning costs $5 to $12 per item. Minor repairs average $3 to $7. Combined, these per-use costs create a floor below which subscription pricing cannot drop without destroying unit economics. Companies that have failed in the clothing rental space, including Gwynnie Bee (closed 2023) and Le Tote (acquired at distressed valuation by Lord & Taylor, which itself subsequently closed), typically underpriced subscriptions relative to true per-use costs.

Demand Volatility and Inventory Risk

PaaS companies carry inventory risk similar to retailers but with additional complexity. Products must be available when customers want them, but idle inventory generates carrying costs without revenue. Rent the Runway has written off $30 to $50 million in inventory annually due to damage, loss, style obsolescence, and end-of-life retirement. Seasonal demand fluctuations (wedding season, holiday parties) create peaks and valleys that challenge capacity planning.

Zipcar, the pioneer of car-sharing in North America, struggled with this challenge throughout its independent existence. Vehicles parked in residential neighborhoods sat idle during commuting hours; vehicles near business districts sat idle on weekends. Utilization rates averaged 25 to 35%, well below the 60 to 70% needed for strong unit economics. Avis Budget Group acquired Zipcar in 2013 for $491 million, roughly 40% below Zipcar's peak market valuation, and subsequently integrated the fleet into Avis's broader vehicle management operation to improve utilization (Avis Budget Group, 2023).

Consumer Behavior Barriers

Despite growing interest, the majority of consumers remain psychologically attached to ownership. A 2024 McKinsey survey of 8,000 North American consumers found that only 23% had used any product rental or subscription service in the preceding 12 months, and only 9% used such services regularly (defined as monthly or more frequently). The primary barriers cited were: hygiene concerns (54% of non-users), desire for ownership (47%), perceived inconvenience of returns (38%), and price relative to purchase (31%).

These behavioral barriers are most acute in product categories with strong emotional or identity associations, such as clothing, furniture, and personal electronics. Categories where PaaS has achieved higher penetration, such as enterprise tools, commercial vehicles, and office equipment, tend to involve rational economic decision-makers evaluating total cost of ownership rather than individual consumers making identity-driven choices.

Key Players

Established Companies

• Rent the Runway: publicly traded clothing rental platform with 175,000 active subscribers and $312 million annual revenue
• Hilti Group: $7.4 billion manufacturer whose Fleet Management program serves 350,000 customers across 120 countries
• United Rentals: North America's largest equipment rental company with $14.3 billion in 2024 revenue and 1,500 locations
• IKEA: launched furniture rental pilots in 30 markets by 2025, targeting 10% of revenue from circular models by 2030
• Schneider Electric: enterprise asset-as-a-service programs for electrical infrastructure and building management systems

Startups

• Grover: consumer electronics subscription platform with 700,000 subscribers across Europe and North America
• Fernish: furniture rental service operating in six US metro areas, targeting millennials and Gen Z renters
• Rheaply: asset exchange platform helping enterprises share underutilized equipment across departments and locations
• Lizee: European PaaS technology platform powering rental and subscription programs for 40 consumer brands

Investors

• Bain Capital Ventures: led Rent the Runway's Series F and supported IPO
• Circularity Capital: Edinburgh-based fund focused on circular economy business models including PaaS
• Energy Impact Partners: invested in industrial PaaS models across energy and infrastructure sectors
• SYSTEMIQ: advising and investing in sharing economy platforms aligned with circular economy principles

Action Checklist

• Map total cost of ownership per unit including acquisition, maintenance, cleaning, transport, insurance, depreciation, and end-of-life recovery before setting subscription pricing
• Design reverse logistics from day one, not as an afterthought: proximity of fulfillment centers to customer clusters reduces transport costs by 30 to 50%
• Implement real-time asset tracking (RFID, IoT sensors) to maintain visibility across the entire product lifecycle
• Start with a narrow product catalog and expand only after unit economics are proven at current scale
• Build automated inspection and refurbishment workflows to reduce per-cycle turnaround time and labor costs
• Target customer segments where the economic case for access over ownership is strongest (frequent movers, budget-conscious consumers, project-based businesses)
• Establish resale and recycling channels for end-of-life products to recover residual value and close the material loop
• Track and report environmental impact metrics (units displaced, waste diverted, emissions avoided) to differentiate from traditional retail and attract sustainability-minded customers

FAQ

Q: What product categories are best suited for product-as-a-service models? A: PaaS works best for products with high purchase prices relative to per-use value, infrequent use by individual owners, durable construction that supports multiple use cycles, and standardized form factors that simplify logistics. Enterprise tools, construction equipment, commercial vehicles, designer clothing, consumer electronics, and furniture meet most of these criteria. Categories with very low unit costs (fast fashion), high personalization (custom goods), or hygiene sensitivity (intimate apparel, mattresses) are poor fits. The strongest indicator of PaaS viability is the utilization gap: if a typical owner uses the product less than 20% of the time they own it, a shared model can deliver the same utility at lower cost.

Q: How do successful PaaS companies achieve profitability? A: Profitability in PaaS depends on three variables: asset utilization rate (target 40% or higher), number of use cycles per asset (target 10 or more for consumer goods, 100 or more for enterprise equipment), and per-cycle revenue relative to per-cycle cost (target gross margins of 50% or higher after logistics, maintenance, and depreciation). Companies that achieve profitability typically do so by reaching sufficient subscriber density within geographic clusters to minimize logistics costs, automating fulfillment and inspection processes, and building long customer relationships that reduce acquisition cost as a percentage of lifetime value. Hilti's Fleet Management program, for example, achieves estimated gross margins above 60% because tools are durable, maintenance is low-cost, and customer retention rates exceed 95%.

Q: What are the biggest risks for investors evaluating PaaS startups? A: The three primary risks are: unit economics that do not scale (per-unit logistics costs remain stubbornly high as volume grows, unlike software where marginal costs approach zero), inventory obsolescence (particularly in fashion and electronics where product cycles are short), and customer acquisition costs that exceed lifetime value in early cohorts. Investors should scrutinize cohort-level economics rather than blended averages, demand evidence of improving unit economics over successive cohorts, and verify that management teams have operational expertise in logistics and supply chain management, not just consumer marketing.

Q: How do PaaS models contribute to sustainability goals? A: PaaS models reduce environmental impact through three mechanisms: extending product lifespans (each unit serves multiple users rather than sitting idle or being discarded), reducing total manufacturing volume (shared assets displace 3 to 12 purchased units depending on category), and enabling end-of-life material recovery (PaaS operators retain ownership and therefore control disposition, achieving 80 to 95% material recovery rates versus 15 to 30% for consumer-disposed products). However, PaaS is not automatically sustainable: if two-way shipping generates more emissions than the manufacturing emissions avoided, or if shared products are retired prematurely due to cosmetic damage rather than functional failure, the net environmental benefit can be marginal or negative. Rigorous lifecycle assessment is essential.

Sources

• Rent the Runway. (2021). Form S-1 Registration Statement. Washington, DC: US Securities and Exchange Commission.
• Rent the Runway. (2023). Annual Report on Form 10-K for Fiscal Year 2023. Washington, DC: US Securities and Exchange Commission.
• Rent the Runway. (2024). Q3 2024 Earnings Call Transcript. New York, NY: Rent the Runway, Inc.
• Ellen MacArthur Foundation. (2023). Completing the Picture: How the Circular Economy Tackles Climate Change. Cowes, UK: Ellen MacArthur Foundation.
• PwC. (2025). The Sharing Economy: Global Market Sizing and Growth Forecast 2020-2030. London: PricewaterhouseCoopers LLP.
• Hilti Group. (2025). Annual Report 2024. Schaan, Liechtenstein: Hilti Aktiengesellschaft.
• Grover. (2025). Sustainability Impact Report 2024. Berlin: Grover Group GmbH.
• Avis Budget Group. (2023). Zipcar Integration and Fleet Optimization Review. Parsippany, NJ: Avis Budget Group, Inc.
• McKinsey & Company. (2024). Consumer Sentiment on Ownership vs. Access: North American Survey Results. New York, NY: McKinsey & Company.