Porter's Five Forces

Concept of the skill

Porter's Five Forces treats profitability as a structural outcome of five pressures around an industry, not just the visible fight among direct competitors.

Concept Card

What it is: Porter's Five Forces is Michael Porter's competitive strategy framework for diagnosing industry structure: rivalry among existing competitors, threat of new entrants, bargaining power of suppliers, bargaining power of buyers, and threat of substitutes.

Mental model: Competition for profits is broader than direct rivalry. Buyers, suppliers, entrants, substitutes, and current competitors each pressure the profit pool. The strategist's job is to understand which forces are strong, why they are strong, how they are changing, and how to position or reshape the business accordingly.

Why it exists: Agents often answer market-entry or competitive-strategy questions with a market-size summary, a competitor list, or generic strengths and weaknesses. Five Forces forces the analysis toward structural profit pressure: who can capture value, who can bid it away, and what that implies for strategy.

What it is not: It is not a strategy cascade, moat taxonomy, macro trend scan, firm capability audit, SWOT list, or TAM model. Those can support the work, but Five Forces owns industry-structure diagnosis.

Adjacent concepts: Industry attractiveness, profit pool, entry barriers, supplier concentration, buyer concentration, substitutes, rivalry intensity, positioning, reshaping industry structure.

One-line analogy: Five Forces is a pressure map around the profit pool.