Economic moats: Pat Dorsey's four sources of durable advantage

Intangibles, switching costs, network effects and cost advantages — and how to tell a moat from a good year.

Dorsey’s question is simple: why can this business keep earning high returns when competitors would obviously like a share of them?

The four moats

  • Intangible assets — brands, patents, regulatory licences.
  • Switching costs — leaving is expensive, disruptive or risky.
  • Network effect — each new user makes it more valuable to everyone else.
  • Cost advantage — process, scale or a location rivals can’t replicate.

What isn’t a moat

Good management, hot products, high market share and operational efficiency all look like moats and aren’t. They can be copied or hired away.

Why a trader should care

Moats explain persistence. A stock without one can still run, but the run is sentiment; with one, earnings can keep compounding.

Your own take goes here — one Indian business you think genuinely has a moat, and one widely believed to that doesn’t.

See the trades behind the writing

Every index-options position I hold, live, with running P&L.

Track record

More on Book summaries