The debate between shareholder primacy and stakeholder theory concerns the legal obligations of corporate directors. Introduction A corporation is never just a machine for making money. It is a legal institution, a social system, and a vehicle for allocating power, risk, and responsibility. That is why one of the most important debates in corporate governance continues to divide scholars, executives, regulators, and investors: should corporations exist primarily to maximize shareholder value, or should they balance the interests of all the people and institutions affected by their actions? This debate is commonly framed as shareholder primacy vs. stakeholder theory. Shareholder primacy says the corporation's central obligation is to its owners, the shareholders. Stakeholder theory says the corporation owes duties to a wider circle of affected parties, including employees, customers, suppliers, creditors, communities, and sometimes society at large. This is not a purely academ...
This post explains the Business Model Canvas, the nine-block framework for describing how a business creates, delivers, and captures value. It covers the customer segments, the value proposition, the channels, and the revenue model, and it shows how the nine blocks connect into one operating picture. The post tests the framework against Netflix’s shift from DVD rental to streaming and M-PESA’s mobile-money model in Kenya.
By Kateule Sydney — Researcher and Writer | Last Verified: 2026-09-28 | Published by Kat-Syd Resources Hub
The Business Model Canvas: nine blocks that describe one business.
Table of Contents
The Nine Blocks That Describe a Business
Definition
The Business Model Canvas is a one-page visual framework for describing, analysing, and designing a business model. Alexander Osterwalder and Yves Pigneur introduced it in Business Model Generation, published in 2010, as an alternative to the traditional multi-page business plan.
The canvas has nine blocks, and each one answers a specific question about the business:
- Customer segments — who the business serves, and which groups it treats as distinct.
- Value propositions — what problem each segment pays to have solved.
- Channels — how the business reaches and delivers to each segment.
- Customer relationships — how the business acquires and retains each segment.
- Revenue streams — how the business is paid, and for what.
- Key resources — the assets the model depends on to work.
- Key activities — the operations the business must perform well.
- Key partnerships — the external relationships the model relies on.
- Cost structure — the costs the model generates.
The nine blocks are arranged in three columns that mirror the logic of any business. The right column is the customer side. The middle column is the value side. The left column is the efficiency side. The cost structure sits along the bottom because every block above it generates cost, and the revenue streams sit on the right because every customer-facing block has the potential to generate revenue.
A canvas is filled in from the customer side inward. The order is deliberate:
- Start with customer segments — a business model describes a specific group of people, not a market in the abstract.
- Then the value proposition — the offer is defined by the problem the segment pays to solve.
- Then the channels and relationships — how the offer reaches the segment, and how the segment is kept.
- Then the left side — resources, activities, and partnerships, chosen to fit the offer, not the other way around.
The canvas is a diagnostic, not a form. A canvas with a filled-in left side and a blank customer side describes a business that has not yet identified who will pay it. The framework shows this at a glance, which is why it replaced the business plan for early-stage testing.
The Customer Side: Segments, Relationships, and Channels
Definition
The customer side of the canvas covers the three blocks that describe who the business serves and how. Osterwalder and Pigneur define the customer segments block as the different groups of people or organisations a business aims to reach and serve, and the customer relationships block as the types of relationships a business establishes with specific segments.
The three customer-side blocks are defined by the questions they answer:
- Customer segments — which groups the business serves, and which it explicitly does not.
- Channels — how the business communicates with, sells to, and delivers to each segment.
- Customer relationships — the type of relationship the business maintains with each segment.
A canvas with more than four customer segments is almost always wrong. A start-up that claims to serve individual consumers, small businesses, enterprises, and government simultaneously has not chosen a segment. It has listed a market. The discipline of the canvas is to force a choice.
Customer relationships fall into six standard types, each with a different cost:
- Personal assistance — a human being available to help, the most expensive type.
- Dedicated personal assistance — a named account manager for each customer, the most expensive of all.
- Self-service — the customer serves themselves, with no direct interaction.
- Automated services — the system anticipates needs and responds, at scale.
- Communities — the customer belongs to a group of other customers.
- Co-creation — the customer participates in designing the product.
The type of customer relationship determines the channel that delivers it. Personal assistance requires a sales force; self-service requires a digital product. A canvas that names a customer relationship type that no channel can deliver has described a wish.
The Value Side: Propositions, Resources, and Activities
Definition
The value side of the canvas covers the value proposition at the centre and the resources, activities, and partnerships that support it. Osterwalder and Pigneur define the value proposition as the bundle of products and services that create value for a specific customer segment.
The value proposition has four parts, and any complete canvas names each:
- The offer — what the customer receives.
- The benefit — what problem the offer solves for the customer.
- The differentiation — why the customer chooses this offer over the alternatives.
- The proof — the evidence the customer can check.
The value side of the canvas is where most business models are weakest. The value proposition claims a benefit, but the key activities do not deliver it, or the key resources do not exist, or the key partnerships are assumed rather than secured. When the canvas shows this misalignment, the model is not yet executable.
The five principles I recommend for testing the value side of any canvas are these:
- The value proposition must name one problem, not five. A proposition that lists five benefits usually solves none of them well.
- Every key activity must be traced to a value proposition. An activity that supports no offer is cost without revenue.
- Every key resource must be either owned or secured. A resource that is assumed is not a resource; it is a hope.
- Every key partnership must be documented. A partnership without a contract is a conversation.
- The proof must be checkable. A benefit the customer cannot verify is a slogan.
The value side of the canvas is not decoration. A business model fails when the offer cannot be delivered by the resources and activities the business actually controls. The canvas makes this failure visible on one page.
The Money Side: Revenue Streams and Cost Structure
Definition
The money side of the canvas covers the two blocks that determine whether the model is financially viable. Osterwalder and Pigneur define revenue streams as the cash a business generates from each customer segment, and cost structure as all the costs incurred to operate the business model.
A revenue stream is not simply the price of the product. It is the mechanism by which the customer pays and the timing of that payment. Two businesses can sell the same product at the same price and still have different revenue streams, because one is paid at the point of sale and the other is paid over a subscription period.
The three-element framework I recommend for analysing the money side of any canvas is this:
- Revenue mechanism — asset sale, usage fee, subscription, licensing, brokerage, or advertising.
- Pricing model — fixed list price, negotiated, auction, market-dependent, or volume-dependent.
- Cost profile — cost-driven or value-driven, and fixed or variable.
The two cost structures are fundamentally different businesses. A cost-driven model competes on price and needs volume. A value-driven model competes on quality and needs margin. A business that claims both is describing a contradiction.
The canvas is only complete when the numbers close. Revenue streams must exceed cost structure, or the model requires a subsidy, and the source of that subsidy must be named. A canvas that does not close is not a business model. It is a proposal for one.
Case Study
Netflix and M-PESA illustrate the Business Model Canvas from opposite directions. Netflix redesigned its canvas in 2007 by changing one block — the channel — and rebuilding the business around streaming. M-PESA designed a canvas from scratch around a single value proposition that no Kenyan bank had addressed.
Netflix launched in 1997 as a DVD-by-mail rental service, with the postal service as its key channel. In 2007 the company introduced streaming, and by 2011 it had begun the transition away from DVDs as the primary channel. Netflix reported 23.8 million streaming subscribers at the end of 2010, 167 million at the end of 2019, and over 300 million by 2025 in its quarterly shareholder letters. The customer segment stayed broadly the same. The value proposition stayed broadly the same. The channel and the key resources changed entirely, and the cost structure shifted from postage and physical inventory to content licensing and cloud infrastructure. M-PESA launched at Safaricom in 2007 with a single value proposition: send money by mobile phone without a bank account. The customer segment was unbanked Kenyan adults. The channel was the existing Safaricom SIM and agent network. The revenue stream was a small transaction fee on each transfer. By 2015 M-PESA had become the largest mobile-money service in the world by volume outside traditional banking, and Safaricom’s annual reports credit it as the largest single contributor to service revenue. [VERIFY: confirm the current M-PESA revenue-share figure and year against Safaricom’s most recent annual report.]
My reading of the pair is that Netflix and M-PESA prove the same point from different canvas positions. Netflix won because the canvas made it visible that one block — the channel — had changed, and that the cost structure had to change with it. M-PESA won because the canvas forced the model to be built around one value proposition, one customer segment, and one revenue mechanism, with no ambiguity. The Business Model Canvas is not a checklist to be filled in once. It is a diagnostic to be redrawn every time a key block changes.
Conclusion
The case evidence establishes that the Business Model Canvas is a diagnostic instrument, not a business plan. Netflix and M-PESA both used the canvas to see which block had changed and what the rest of the model had to become, and both made the change before the market forced it on them.
The canvas matters because a business model is a system, and a system fails when one block is out of alignment with the others. The framework is supposed to produce a one-page description in which every block is consistent with every other block, and in which the revenue streams close the cost structure. It applies at start-up, at every pivot, and at every major strategic change, because a model that worked in one market rarely survives a move to the next. The people responsible are the founder and the strategy lead, with the finance lead validating the cost and revenue blocks and the operations lead validating the resource and activity blocks. The method is to fill the canvas in the order the framework requires — customers first, value second, money last — and to redraw it whenever a key block changes. The advantage of the canvas is that it shows misalignment on one page, that it costs nothing to redraw, and that it forces every part of the business to be justified in terms of the customer. The limitation is that the canvas describes a model but does not test it, that it can be filled in persuasively without evidence, and that a canvas which ignores the competitive environment can describe a beautiful business that has no market.
The recommendations I would give any founder or strategist using the Business Model Canvas are these:
- Name three or fewer customer segments — a canvas with four or more segments has usually not chosen any.
- State the value proposition in one sentence — if it needs a paragraph, the offer is not yet clear.
- Trace every key activity to a value proposition — an activity that supports no offer is cost without revenue.
- Name the pricing model explicitly — the price and the mechanism by which the customer pays are two different decisions.
- Redraw the canvas every quarter — a model that does not change when the market changes is not a model; it is a memory.
A Business Model Canvas is only worth the paper it is drawn on if it changes what the business does next, and the discipline of redrawing it is the whole of the exercise.
Read Also on Kat-Syd Resources Hub
Entrepreneurship and Innovation Part I — Ideation and Opportunity Recognition — how the Business Model Canvas follows opportunity recognition in the wider process.
Developing the Business Plan — Entrepreneurship and Innovation Part II — where the canvas feeds the market and financial sections of the plan.
Functional Management — The Pillars — how marketing, operations, finance, and human resources support the model once it is designed.
Written by Kateule Sydney — Researcher and Writer
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