Index

Porter's Five Forces

A framework that evaluates competitive intensity through five structural forces: rivalry, supplier power, buyer power, threat of substitutes, and threat of new entrants.

Porter's Five Forces helps you assess whether an industry or market position is structurally attractive before committing resources.

Which structural forces most threaten margins in this market, and can we position around them?

A SaaS startup evaluates a vertical and discovers low switching costs and strong buyer power. They redesign onboarding to create deep workflow integration, raising switching costs before competitors commoditize the space.

  1. 1.Rate each of the five forces as high, medium, or low with supporting evidence.
  2. 2.Identify which one or two forces most constrain profitability.
  3. 3.Design strategy to weaken the strongest negative force or strengthen your position against it.
  4. 4.Reassess forces annually as technology and regulation shift the landscape.
  • ·Treating the analysis as a one-time exercise instead of a living assessment.
  • ·Ignoring complementors and ecosystem dynamics that Porter's original model omits.
  • ·Confusing current competitor behavior with structural industry economics.

Is Porter's Five Forces still relevant for tech companies?

Yes, but supplement it with network effects and platform dynamics, which amplify or dampen several of the original forces.

How granular should the industry definition be?

Narrow enough that forces are consistent across players. If two segments face different buyer power, analyze them separately.

  • Wardley Mapping

    Visualize the landscape before choosing where to compete.

  • Blue Ocean Strategy

    Create uncontested market space instead of fighting over existing demand.

  • Barbell Strategy

    Combine safety on one side with selective asymmetric upside on the other.