The Power Curve

Definition

If you rank thousands of large companies by average economic profit, the result is not a bell curve but a power curve: long, nearly flat "middle three quintiles," then tails that rise and fall at exponential rates. The authors argue this curve — not last year's numbers, not your closest competitor — is the correct reference point for judging whether a strategy is actually working: "Success for your strategy becomes moving up on the Power Curve."

In the Book

Chapter 2 builds the curve from financial data on 2,393 of the world's largest non-financial firms (2010–2014), ranked by average economic profit. The middle three quintiles average just $47 million a year — companies there are, in effect, "paying the rent." The top quintile averages $1.4 billion, about 30 times the middle, and captures nearly 90% of all economic profit created; the top 40 companies (Apple, Microsoft, Exxon, Samsung, Walmart, and others) alone earned more than half the profit of all 2,393 firms combined. The curve is also getting steeper over time — top-quintile collective profit roughly tripled from 2000–4 to 2010–14 while the bottom quintile's losses quintupled — because capital increasingly chases winners regardless of industry or geography. The book stresses that roughly half of a company's position is explained by its industry's own power curve (the median pharma or software company would be a top-quintile chemicals company), which is why "where to play" is inseparable from "how to win."

Why It Matters

Comparing yourself only to last year or to your nearest rival makes incremental improvement look like success, when in a power-law world it usually isn't enough to change your fate. Plotting the full distribution reframes the goal from "beat the plan" to "move to a different, much richer region of the distribution" — a lens that applies to any domain where outcomes are power-law distributed (income, city size, firm value, citation counts) and where local comparisons systematically understate how far ahead the real leaders are.