Stock Market · Fundamental Analysis

Economic moats

An economic moat is a sustainable competitive advantage that protects a company's profits from competition over the long term. The term was popularised by the best-known value investors.

Why moats matter

A company earning 30% ROCE will attract competition. Competitors will try to undercut on price, copy the product, or lure away customers. A moat is what prevents this erosion.

Without a moat, above-average returns eventually revert to average as competition intensifies. With a deep moat, returns stay elevated for decades.

> What matters is not how large an industry will become, but whether a given company has a competitive advantage, and above all how durable that advantage is.

Types of moats

1. Network effects: the product becomes more valuable as more people use it. Dominant messaging apps, securities depositories, stock exchanges (more participants = better liquidity). Hard to replicate.

2. Cost advantages: ability to produce at lower cost than competitors. Manufacturing scale in branded jewellery and watches; a no-frills value-retail model. Price-based competition fails against them.

3. Switching costs: high cost (financial, operational, psychological) to switch to a competitor. Banking apps, ERP software, accounting software. Once embedded, customers stay.

4. Intangible assets: patents, licenses, brand. A packaged-foods maker's flagship noodle brand survived a nationwide product recall because of brand strength. A top-tier private bank's trust premium.

5. Efficient scale: market too small for multiple competitors to coexist profitably. Toll roads, pipelines, specific infrastructure.

Durable moatreturns stay above cost of capital for 10+ years

Look for moat evidence in consistent ROCE, pricing power (margins stable even when costs rise), and customer retention data.

Takeaway. Moats protect above-average returns from competition. Network effects, switching costs, cost advantages, and intangible assets are the main moat types. Durability, not just current strength, is what you buy.