Brand
Customers pay more or buy more often because of the brand itself. Coca-Cola, LVMH, Hermes. Measurable through pricing power across cycles and gross-margin durability.
Definition
What is an economic moat?
An economic moat is Warren Buffett's term for a durable competitive advantage that protects a company's profits from competition. Common moat sources include brand, switching costs, network effects, cost advantages, and regulatory barriers.
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Short answer
Buffett borrowed the moat metaphor from medieval fortifications: the water trench that keeps invaders out. In business, the moat is whatever structural feature lets a company earn above-average returns on capital for a long period without being competed away. Moat depth (how big the advantage is) and moat width (how long it will last) are separate questions; both show up in the Buffett-Fit and Munger-Fit reasoning.
The six recognised moat sources
Morningstar codified the moat taxonomy in the early 2000s, building on Buffett's informal descriptions. invest-like uses these six categories to classify the moat pillar in framework reasoning.
Switching costs
Leaving the product is operationally painful or risky. Enterprise software, payroll systems, core banking platforms. Visible in retention rates and customer lifetime value.
Network effects
Each new user makes the product more valuable for existing users. Exchanges, marketplaces, payment rails, social networks. Self-reinforcing once critical mass is reached.
Cost advantage
Structurally lower unit costs from scale, geography, or process. Walmart, Costco, low-cost commodity producers. Visible in sustainable gross-margin spreads versus peers.
Intangible assets
Patents, regulatory licences, FDA approvals, exclusive content. The protection is legal or licensed and competitors literally cannot replicate it for a fixed window.
Efficient scale
Markets large enough for only one or two profitable players. Pipelines, regional airports, utilities. New entrants would destroy economics for everyone, including themselves.
How to measure a moat
Quantitative signals: sustained ROIC above 15 percent, gross margin materially above sector peers, low customer churn, pricing power that holds in real terms across cycles. Qualitative signals: customer testimony, market share trajectory, competitive responses, and management willingness to walk away from low-return business.
invest-like scores moat as the first pillar of the Buffett-Fit Score; see /learn/what-is-buffett-fit-score/ for the rubric.
Related
- Buffett-Fit methodology - moat is the first of the five Buffett-Fit pillars; this is the rubric used to grade it.
- Top Buffett-fit stocks today - the live ranking of US-listed stocks scoring highest on moat-led Buffett criteria.
See moat reasoning on a real verdict
Every Buffett-Fit verdict on invest-like surfaces a moat sub-score with one paragraph of reasoning grounded in current fundamentals.
Educational only. invest-like is not a registered investment adviser; nothing here is personalised investment advice. Always do your own research and consider your individual circumstances.