Porter's Five Forces: the AI-powered competitive analysis

When Michael Porter published Competitive Strategy in 1980, he handed every business student the same gift: a structured way to look at an industry and understand why some companies make money and others bleed it. Five Forces became the framework you cite in business school, the slide you put in board decks, and (for most people) the framework you never quite get around to running properly on your own business.

The reason is friction. A real Five Forces analysis takes hours of reading, structuring, and writing. By the time you have collected the data, your competitor has already moved.

That changes when you put AI in the loop.

What Five Forces actually is#

Porter’s argument is that the profitability of any industry is shaped by five competitive pressures, not just by how aggressively rivals fight each other:

1. Rivalry among existing competitors, how brutal is the head-to-head?
2. Threat of new entrants, how easy is it for someone new to show up?
3. Threat of substitutes, what else can your customer buy instead?
4. Bargaining power of suppliers, who sets the terms upstream?
5. Bargaining power of buyers, who sets the terms downstream?

Each force pushes profit pools around. A weak industry on all five forces (think generic airlines) is a hard place to make money. A strong one on all five (think enterprise software with high switching costs) is a license to print it.

Why this matters when you need a deliverable#

You do not usually run Five Forces because you are curious. You run it because someone, a board, an investor, your CEO, your own future self, needs to understand a competitive position and make a decision. The framework is the scaffolding for the story you are going to tell.

That is where most people get stuck. They know the five forces. They cannot get from “I know the framework” to “I have eight pages of credible analysis with sources.”

A starter prompt#

Paste this into Claude or ChatGPT and replace the bracketed parts:

Act as a strategy consultant. I need a Porter’s Five Forces analysis for [industry: e.g. premium electric bicycles in Western Europe]. For each of the five forces, give me:

1. A one-sentence verdict (Strong / Moderate / Weak with direction).
2. Three to five specific factors that drive that verdict, with named examples where you can.
3. The implication for an incumbent trying to defend a profit pool.

Then give me a one-paragraph synthesis: which forces matter most for this industry, and what that implies for strategic priorities.

Run it. Read what comes back.

Here is the honest truth: the first output will be rough. It will mix up adjacent industries. It will name a competitor that does not exist. It will hand-wave on supplier dynamics. That is fine. The point is that in 90 seconds you have a draft to argue with, and arguing with a draft is dramatically faster than starting from a blank page.

Do not stop at the first draft#

The actual workflow is iterative. You feed the output back in: “The threat of substitutes section is too generic, give me specific substitute categories and their relative price points.” You add evidence: “Cite at least three sources for the rivalry analysis and flag anything you cannot source.” You stress-test: “What would a contrarian analyst say about this synthesis, and how would I refute them?”

What comes out the other side after three or four iterations is something you can actually paste into a deck, with the forces clearly named, the verdicts defendable, and the implications sharp enough to drive a recommendation.

Why I am writing about this#

A free starter prompt is enough to show you what is possible. It is not enough to give you a presentation-ready Five Forces deliverable on a deadline. The complete recipe, the structured prompt chain, the source-checking pass, the verdict template, the slide-ready output format, is what turns “I dabbled with AI” into “I shipped the analysis.” That is the Five Forces framework.