Warren Buffett：Berkshire 1985 Letter, Excerpt 4

The second negative factor, far more telling, is our size. Our equity capital is more than twenty times what it was only ten years ago. And an iron law of business is that growth eventually dampens exceptional economics. just look at the records of high- return companies once they have amassed even $1 billion of equity capital. None that I know of has managed subsequently, over a ten-year period, to keep on earning 20% or more on equity while reinvesting all or substantially all of its earnings. Instead, to sustain their high returns, such companies have needed to shed a lot of capital by way of either dividends or repurchases of stock. Their shareholders would have been far better off if all earnings could have been reinvested at the fat returns earned by these exceptional businesses. But the companies simply couldn’t turn up enough high-return opportunities to make that possible.

Source： https://www.berkshirehathaway.com/letters/1985.html
Locator：1985 Chairman's Letter, excerpt 4 · Verified：2026-10-19 · Verification：Short excerpt

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