Comparing by fit
Two ways of thinking, side by side. There is no winner here — read across each row and choose the one that fits your situation.
Strategy
Explain why an industry is profitable — or isn't — before you commit to competing in it.
By 6days
Strategy
Compete somewhere else: redraw the offer so the current rivalry stops being the question.
By 6days
When to use — Porter's Five Forces
Use it before entering an industry, before a major capital commitment, or when strong execution is somehow producing weak margins and you need to know whether the problem is you or the structure you are operating inside.
When to use — Blue Ocean Strategy
Use it in a commoditised market where competitors are near-indistinguishable and margins are eroding, or when a large population plainly declines to buy from anyone in the category and you want to know why.
When not to use — Porter's Five Forces
Avoid it for short-term or tactical calls — it describes structure, which moves over years. It fits industries with recognisable boundaries better than fluid ecosystems and platforms, where roles blur and today's supplier is next year's competitor. It also says nothing about your own capabilities, and it is a snapshot of a structure that will keep moving after you present it.
When not to use — Blue Ocean Strategy
Avoid it in a young market where the rules are not yet settled — there is no convergence to escape. Be wary of it as a rationalisation: 'we compete differently' is the most comfortable thing a losing company can tell itself, and the framework supplies attractive language for it. The literature also selects heavily on winners, so the base rate for this working is far lower than the case studies imply.
Teams evaluate a market by looking at direct rivals and market growth, then are surprised when a fast-growing market turns out to make nobody any money. Profitability is structural. If suppliers can raise prices at will, or customers can switch on a whim, or anyone with modest capital can enter, then competence will not save you — the structure will take the margin regardless of how well you execute.
In a mature market everyone converges. Competitors track each other's features, match each other's prices, and target the same customers with steadily thinner margins. Each individual move is rational and the collective result is that the whole industry works harder every year for less. Trying to win this game by playing it better usually means winning a contest that is no longer worth winning.
The five forces model explains industry profitability through the pressures that compete for its margin: rivalry among existing players, the threat of new entrants, the threat of substitutes, supplier power, and buyer power. Each force is a claim on the money the industry produces. Analysed together they answer a question growth rates cannot — whether there is profit available here structurally, and where it currently goes. Strong forces mean a hard industry no matter how good you are; weak forces mean margin is available to whoever can serve the customer.
This approach argues that the more durable move is often to change what is being competed over rather than to compete harder. It works by questioning the factors an industry treats as mandatory — the features everyone offers because everyone offers them — and reallocating that spend toward things nobody currently provides. The tool is a set of four questions applied to the industry's assumed features: which to eliminate, which to reduce below the standard, which to raise above it, and which to create that the industry has never offered. Done well the result serves a different demand at a different cost base. Done badly it is a worse product with a story attached.
State exactly which industry you are analysing, at what level, in what geography. Draw it too wide and every force reads as moderate and the analysis says nothing; too narrow and you will miss the substitute that eventually takes your customers.
Take the forces one at a time and argue each from evidence rather than impression. Supplier power is not 'high' because a supplier is large; it is high when few alternatives exist, switching is costly, or the supplier could plausibly do your job themselves.
Follow the money. In many industries the profit does not sit with the visible brand but with a component supplier, a distribution gatekeeper, or the buyer who plays everyone against each other. Naming who currently captures the margin is usually the analysis's most uncomfortable output.
Ask what would need to be true for the structure to shift in your favour — an entry barrier you could build, a supplier dependency you could break, a switching cost you could create. This turns a diagnosis into strategy. If nothing on the list is achievable, that is a finding.
Worked example — Porter's Five Forces
A hardware startup plans a premium smart-home speaker. Rivalry: intense, with entrenched players subsidising devices to win the ecosystem. Entrants: hardware is capital-heavy, but contract manufacturing lowers the wall considerably. Substitutes: the phone already in every pocket does most of the job adequately. Suppliers: one vendor controls the voice-processing chip. Buyers: retailers dictate shelf terms and switch brands without cost. Four of five forces are hostile and the margin sits with the chip vendor and the retailer. The conclusion is not 'execute harder' but that the device is only viable as an entry point to something with better structure — a service relationship the speaker creates rather than the speaker itself.
Worked example — Blue Ocean Strategy
A budget gym chain examines its industry's assumed factors: pools, classes, sauna, juice bar, central location, long staffed hours, annual contracts. It eliminates pools, sauna and juice bars, reduces staffed hours to a few peak periods, raises equipment quality and opening hours to 24/7, and creates a rolling monthly membership with no contract. The eliminated factors fund the created ones, and the offer reaches people who never joined a gym because the contract and the price were the barrier — not people choosing between existing gyms.
Introduced by economist Michael Porter in the late 1970s and developed in his subsequent writing on competitive strategy, the model applies industrial-organisation economics to firm-level decisions. Unlike many business frameworks its authorship is clear and undisputed. It has been extended by others since, most commonly with a sixth force covering complements.
The approach was set out by W. Chan Kim and Renée Mauborgne in the mid-2000s, building on earlier work on value innovation. The underlying idea — that firms can escape rivalry by redefining the offer rather than out-executing peers — has older roots in economics and strategy. The named framework and its associated terminology are the authors' commercial work; the description here is our own.
List the factors every player invests in and rate how heavily each competitor invests in each. The pattern is usually stark: profiles that track each other almost exactly. That convergence is the thing you are trying to escape, and seeing it drawn out is what makes the case.
Look at who is not buying from anyone in your industry. Non-customers are more informative than customers, because they are rejecting the whole category rather than your version of it. Their reasons point directly at the assumptions worth attacking.
Against the industry's factor list ask: what can be eliminated entirely? What can be reduced well below standard? What should be raised well above it? What should be created that nobody offers? Eliminate and reduce fund raise and create — that is what keeps this from being an expensive wish list.
A genuinely different offer must be deliverable at a cost the new demand supports. Price it against the customer you are now serving, not the one you left. If the numbers only work at volumes you have never achieved, you have written a hope rather than a strategy.
Put it in front of non-customers rather than your existing base. Your current customers chose you under the old rules and will reliably tell you to keep the features you just removed.