Product-as-a-Service and Access Models
The model that realigns incentives
Product-as-a-Service (PaaS) is the circular business model with the most profound structural impact on producer incentives. By shifting revenue from product sale to service performance, it makes product longevity, repairability, and end-of-life recovery directly profitable for the manufacturer rather than costs to be minimised. When a company profits from a product's continued use rather than its replacement, the interests of business and environment naturally align.
The Core Logic of Product-as-a-Service
In the traditional linear sale model, a manufacturer's revenue is tied to volume: the more units sold, the more revenue earned. This creates an implicit incentive to design products that wear out, break down, or become obsolete at a rate that drives replacement purchases. The customer bears the full cost of ownership, maintenance, and disposal. The manufacturer bears none of these costs and has no incentive to minimise them.
Product-as-a-Service inverts this logic. The manufacturer retains ownership of the product and earns revenue from its performance or use over time. This structural shift means that every dollar spent on premature failure, unnecessary maintenance, or inefficient end-of-life disposal comes directly out of the manufacturer's margin. The business model itself rewards circular design.
Analogy: Comparing Hotel Ownership Models
Consider two hotel room models. In Model A, the hotel sells the room contents to each guest and buys new ones when the next guest arrives. Every mattress, every chair, every lamp is discarded and replaced. This is absurd for hotels, which is why no hotel works this way. In Model B, the hotel retains the room contents, maintains them, and replaces only what wears out. This is obvious good management, yet it is exactly the model that product-as-a-service brings to manufactured goods: keep the asset, maintain it, recover it. The insight is simply that this logic can apply far beyond hotels.
Types of Access and Service Models
The spectrum of access-based and service models runs from pure product rental through to fully outcome-based contracts:
| Model Type | Revenue Basis | Who Owns Asset | Example |
|---|---|---|---|
| Rental / Leasing | Time-based payments for access | Manufacturer or lessor | Car rental; office equipment leasing |
| Subscription | Periodic fee for access and maintenance | Provider | Clothing subscription boxes; software with hardware bundles |
| Pay-per-use | Unit of use (kilometre, hour, copy) | Provider | Michelin tyres per kilometre; Xerox copies per page |
| Performance contract | Outcome achieved (uptime, efficiency) | Provider | Rolls-Royce Power by the Hour; Philips Light as a Service |
| Sharing platform | Platform fee or transaction commission | Individual owners | Airbnb; peer-to-peer car sharing |
Landmark Case Studies
Several major companies have implemented Product-as-a-Service at significant scale, demonstrating both the commercial viability and the circular economy benefits:
Philips: Light as a Service
Philips (now Signify) pioneered "Light as a Service" for large commercial clients including Schiphol Airport. Under this model, Philips owns all the lighting equipment, installs and maintains it, and charges per lux-hour of light delivered. The airport pays for illumination, not fixtures. Philips has direct financial incentives to install its most energy-efficient and longest-lasting LED systems, to maintain them proactively, and to recover and remanufacture them at end of life. Schiphol benefits from guaranteed light quality, no capital expenditure on fixtures, and the assurance that energy costs are optimised by the party with the greatest expertise: the manufacturer.
Rolls-Royce: Power by the Hour
Rolls-Royce pioneered outcome-based contracting in the aerospace sector through its "TotalCare" (originally "Power by the Hour") model for jet engines. Airlines pay per hour of thrust delivered rather than purchasing engines outright. Rolls-Royce retains ownership, provides all maintenance, and takes engines back at end of life. Because unplanned engine failure is extremely costly for the company (it must absorb the costs), Rolls-Royce has invested heavily in predictive maintenance, remote monitoring, and materials science that maximises engine lifespan. The result is fewer failures, longer engine life, and better recovery of high-value nickel superalloys at end of service.
The Sharing Economy Distinction
Sharing platforms such as car-sharing services, tool libraries, and accommodation sharing represent a related but distinct model. Rather than a manufacturer retaining ownership, sharing platforms enable higher utilisation of privately owned assets by matching them with users who need them temporarily. The circular economy benefit comes from the utilisation effect: each shared asset can serve multiple users, reducing the total number of assets that need to be manufactured.
A private car in many cities is used for only about 4% of the hours in a year. A well-managed car-sharing scheme can use the same vehicle for 40% or more of its available hours. If the sharing scheme raises utilisation tenfold, the same mobility service can be provided with ten times fewer vehicles, dramatically reducing material throughput in the automotive sector.
Challenges and Conditions for Success
Product-as-a-Service models face genuine structural challenges that have slowed their adoption beyond certain sectors:
- Customer acceptance: Many customers prefer ownership to access, particularly for personal items. Cultural shifts and trust in service provider reliability are prerequisites for adoption.
- Logistics complexity: Retaining and recovering assets from dispersed customer locations requires reverse logistics capabilities that linear businesses have never needed to develop.
- Financing structures: Asset-retention models require capital to finance product inventories that would previously have been paid for upfront by customers. New financing structures are needed.
- Accounting conventions: Under current accounting standards, retained assets appear on balance sheets as liabilities. Regulatory and accounting reform may be needed to remove this disincentive for large-scale adoption.
- Product design: PaaS models only work economically if products are designed to be maintained, repaired, and recovered efficiently. Legacy product lines often cannot support the model without redesign.
The circular economy's vision of an access economy is sometimes called the "utilisation economy": an economic system that extracts maximum service from existing assets rather than continuously manufacturing new ones. The utilisation economy contrasts sharply with the current system, in which many assets are significantly underutilised: office buildings are empty at night and weekends; household tools are used for a few hours a year; industrial machinery runs at a fraction of capacity.
Digital platforms are the key enabler of the utilisation economy because they dramatically reduce the transaction costs of matching underutilised assets with users who need them. The marginal cost of an additional match on a digital platform is near zero, whereas the physical infrastructure needed to build and maintain a traditional rental business is substantial. This is why digital-platform sharing models have scaled so rapidly where they have found the right product-user-regulatory combination.
Key Takeaways
- 1Product-as-a-Service retains product ownership with the manufacturer and charges for performance or use, structurally aligning commercial incentives with product longevity and circular recovery
- 2The model spectrum runs from simple rental through subscription, pay-per-use, performance contracts, and sharing platforms, each with different risk and reward distributions
- 3Philips' Light as a Service at Schiphol Airport and Rolls-Royce's Power by the Hour are landmark examples of outcome-based circular contracting at scale
- 4Sharing platforms raise asset utilisation: a shared car used 40% of the time replaces up to ten privately owned cars used 4% of the time each, reducing manufacturing throughput tenfold
- 5Key adoption challenges include customer preference for ownership, reverse logistics complexity, financing structures, accounting conventions, and the need for products designed for service recovery
- 6Digital platforms are the critical enabler of the utilisation economy by reducing the transaction costs of matching assets with users to near zero