Porter's Four Corners
Porter's Four Corners predicts what a specific competitor will do next by mapping their future goals, their assumptions about themselves and the market, their current strategy, and their real capabilities.
Goals, assumptions, strategy and capability sit in four quadrants around the competitor you're sizing up.
Reach for this when…
- A specific rival keeps out-manoeuvring you and you want to anticipate the next move, not just react.
- You are about to launch and need to know if a competitor will retaliate hard or ignore you.
- Leadership keeps guessing at a rival's intentions instead of working from evidence.
How to run it
- Gather what the competitor's leadership actually says about their future goals.
- Note their assumptions: how they see themselves and the industry, right or wrong.
- Document their current strategy: what they are actually doing now.
- Assess their real capabilities: what they could do if they chose to.
- Combine the four into a response profile: how they are likely to react to your move.
A worked example
Situation. Nguyen Van Long ran an electronics component maker in Da Nang, Vietnam, about to undercut a larger domestic rival on price and unsure whether to expect a price war.
Applied. Mapping the rival's four corners, he found their stated goal was margin recovery after a bad year, not volume, and their assumption was that smaller players would not dare compete on price.
Result. He guessed the rival would hold price rather than retaliate, launched the cheaper line, and the rival did exactly that: nothing. He gained share without a fight.
The catch
Four Corners depends on information you can rarely verify, so a wrong read on assumptions or goals produces a confident but wrong prediction. It also works one competitor at a time, which is slow if the real threat is the whole field moving together, and public statements about goals are not always honest ones.
A competitor's stated strategy and their real strategy are not the same document. Weight what they do over what they say.
Origin: Michael Porter