Porter's Five Forces

Airlines move billions of passengers a year, yet for most of their history they have earned thin or negative margins. Warren Buffett once joked that a far-sighted capitalist at Kitty Hawk should have shot Orville Wright down. Porter's Five Forces explains why a busy, essential industry can still be a poor place to make money.

What Porter's Five Forces is

Michael Porter introduced the model in a 1979 Harvard Business Review article, "How Competitive Forces Shape Strategy", and expanded it in his 1980 book Competitive Strategy. His point was that the profit potential of an industry is set by its structure, not by how hard the companies in it try. Five forces divide the value an industry creates:

• Rivalry among existing competitors: price wars, discounting, copycat features.
• Threat of new entrants: how easily a newcomer can start and win customers.
• Bargaining power of suppliers: who can raise your input costs.
• Bargaining power of buyers: who can push your prices down.
• Threat of substitutes: different products that solve the same need.

The stronger the forces, the less profit is left for the companies in the middle.

Five Forces example: the airline industry

Porter used airlines himself in his 2008 update of the article, and the industry scores badly on almost every force.

The useful conclusion is not "airlines are hard". It is where the profit leaks out, and that points to the moves that work: loyalty programmes that reduce buyer power, slot positions at busy airports that block entrants, and fleet choices that reduce supplier dependence.

How to run a Five Forces analysis in 30 minutes with the card

1. Minutes 0 to 5: draw the industry boundary. Name the product and the geography, for example "specialty coffee roasting for cafes in the Benelux". Too broad and every force looks average.
2. Minutes 5 to 20: rate each force. Three minutes per force. Give it low, medium or high, and write the one fact that justifies the rating.
3. Minutes 20 to 25: find the strongest force. That is where most of the profit goes. Circle it.
4. Minutes 25 to 30: pick one move. What could you do to weaken that force or shelter from it? Write it down with an owner.

The front of the card lists the five forces and when to use them; the back has the steps and an example, so you can run the session without building a framework slide first.

Common Five Forces mistakes

• Analysing your company instead of the industry. The model describes the playing field, not your team. Your strengths belong in a SWOT analysis.
• Listing forces without rating them. A description of each force is research. A rating with evidence is analysis.
• Adding government as a sixth force. Porter treats regulation as something that shifts the five forces, not as a force of its own. Use a PESTLE analysis for that layer.
• Treating the result as permanent. New technology can change a force quickly, as online booking did for airline buyers.

Porter's Five Forces FAQ

• What is the difference between Five Forces and SWOT?

  Five Forces looks at the industry and tells you how attractive it is. SWOT looks at your own position inside it. Many teams run Five Forces first and use the result to fill the opportunities and threats in a SWOT.

• Is Porter's Five Forces still relevant for digital businesses?

  Yes, though the forces can shift faster. Platforms often gain buyer and supplier power at the same time, which is exactly the kind of shift the model helps you spot.

• How often should I redo the analysis?

  Once a year for a stable industry, and whenever a new competitor, technology or regulation appears.

Rate the industry, then decide

The Five Forces card keeps the five questions and the steps in one place, so the session starts with the industry instead of a blank page. The Miro board and Google Sheets template let a team rate each force together and keep the evidence next to the score. If the industry looks attractive, the BCG Matrix helps you decide where in your portfolio to invest. The card is part of the MBA Tools deck.