Why Growth Only Creates Value When There Is a Moat

"There is a fundamental problem with DCF valuations: you are combining very good information — your near-term cash flow estimate — with very bad information, your estimate of distant cash flow." — Bruce Greenwald

Bruce Greenwald is sceptical of long discounted cash flow forecasts for established businesses, because the far-off years rest on guesses. Instead he breaks an investor's expected return into a few measurable, testable components built from what a business earns today.

His key point is uncomfortable: growth only creates value if the business has a moat — a durable competitive advantage. In a genuinely competitive market, growth requires capital that earns less than the cost of that capital, so growing actually destroys value. Only inside a protected franchise does each extra dollar of growth add more than it costs.

The practical test is therefore not "is this company growing?" but "does it have an advantage that lets growth pay off?" Growth without a moat is activity, not value.

Illustrative example: McDonald's

A franchise with a strong brand, scale and real-estate economics can reinvest in new outlets at attractive returns — so its growth genuinely adds value. The same expansion strategy in a business with no advantage would simply spend capital to stand still.