Industry Analysis

Some industries make their average member rich. Others grind even their best members down. Before analyzing any company, spend ten minutes on the pond it swims in — because a mediocre company in a wonderful industry frequently outperforms a brilliant company in a terrible one.

A famous business professor, Michael Porter, boiled industry judgment down to five forces. Decoded into plain questions:

1. How brutal is the fighting between existing players? Ten similar airlines selling identical seats compete on price alone — a war where the customer wins and every shareholder loses. Two dominant stock exchanges barely compete at all. Count the players; check if their products differ; see whether price wars are routine.

2. How easily can new competitors enter? Anyone can open a restaurant next year; nobody can open a credit-rating agency (Chapter 14's moats, viewed from outside). Easy entry means today's profits invite tomorrow's attackers.

3. Can suppliers squeeze the industry? If one supplier controls a critical input, it captures the profits. Airlines don't set fuel prices; chipmakers depend on a tiny handful of equipment makers who charge accordingly.

4. Can customers squeeze the industry? When a few giant buyers face many small sellers, buyers dictate terms. Auto-parts makers selling to two big carmakers get their margins negotiated to the bone. Millions of individual toothpaste buyers negotiate nothing.

5. Can something replace the industry entirely? Not a competitor — a replacement. Digital cameras didn't out-compete film; smartphones then didn't out-compete cameras. They made the previous thing pointless. This force is the hardest to see early and the most fatal when it arrives.

Run all five and you get an industry's profit personality — and it shows up in the data: entire industries have persistently high margins (software, exchanges, branded consumer goods) or persistently thin ones (airlines, commodity steel), regardless of who's managing which company. That's the pond speaking.