What Is a Moat in Business?
A business moat is a durable competitive advantage that protects your market position. Learn the five types and how to build them.
Key Takeaways
- A moat is a sustainable competitive advantage that makes it hard for rivals to take your customers.
- The term was popularised by Warren Buffett and applies equally to startups and established companies.
- The five main moat types are network effects, switching costs, economies of scale, brand, and regulatory advantage.
What a moat is
In business, a moat is any structural advantage that protects a company from competition over the long term. Just as a castle moat keeps invaders out, a business moat makes it difficult, expensive, or unattractive for competitors to take your market share. Warren Buffett looks for moats when investing because they indicate a business can sustain profits over decades, not just quarters.
The five types of moats
Network effects: the product improves as more people use it. Switching costs: customers face high costs to leave. Economies of scale: unit costs drop as volume increases, pricing out smaller competitors. Brand: customers pay a premium for trust and recognition. Regulatory or legal advantages: licences, patents, or compliance requirements that create barriers. Most durable businesses have at least two of these.
Building a moat as a small business
You do not need to be a multinational to have a moat. A local accounting firm with deep relationships and sector expertise has a switching-cost moat. A marketplace connecting African artisans to global buyers builds a network-effect moat as both sides grow. Identify which type of moat is natural for your business and invest in widening it deliberately.
Moats erode over time
No moat is permanent. Technology shifts, regulatory changes, and determined competitors can erode any advantage. Blockbuster had a distribution moat that Netflix destroyed. The key is to monitor your moat's strength and reinvest in widening it. Ask annually: is it harder or easier for a competitor to replicate what we do compared to last year?