economic-moatlisted

# Economic Moat ## Overview An **economic moat** is the durable, structural competitive advantage that protects a business's returns on capital from being competed away. Popularized by Warren Buffett (1986 Berkshire letter); codified into five sources: intangible assets, switching costs, network effects, cost advantages, efficient scale. Greenwald's test: if you cannot name a specific mechanism that would cost a well-funded rival years and tens of millions to overcome, you have execution — not a moat. Composes with [`network-effects`](../network-effects/SKILL.md) and [`switching-costs`](../switching-costs/SKILL.md) (two moat sources, deeper treatment), [`porters-five-forces`](../porters-five-forces/SKILL.md) (industry-level; moat is company-level), [`margin-of-safety`](../margin-of-safety/SKILL.md) (wide moat × discount price = Buffett formula), [`lindy-effect`](../lindy-effect/SKILL.md) (long survivors demonstrate moat durability). ## When to Use - Evaluating an investment, competitor, acquisition, or startup strategy for long-term defensibility - Founder-board planning or investor pitch review around "what stops competitors" - Someone says "moat," "defensibility," "competitive advantage," or "what stops competitors" **Not when:** short time horizon; commoditized market (confirms "no moat"); question is immediate execution. ## Coaching Novices (Adaptive Front Door) - **Engine mode:** user has a specific business → run The Process directly. - **Coach mode:** user is u