An economic moat is a durable competitive advantage that protects a business's customers and profits from competitors, the way a moat protects a castle. Warren Buffett popularized the term in 1995. Common sources are network effects, switching costs, cost advantages, intangible assets such as brands and patents, and efficient scale. The Subscription Playbook's MOATS framework turns the idea into a checklist for owners.
Key takeaways
- A moat is an advantage that lasts, not a lead that a well-funded rival can close in a year.
- Morningstar lists five sources: intangible assets, switching costs, network effects, cost advantage and efficient scale.
- The MOATS framework: Marketing supremacy, One (no single point of failure), Audience, Toughness and Switching.
- Moats can shrink. AI has narrowed many in 2025 and 2026.
Say you start selling dog biscuits on subscription.
Good idea. Recurring revenue, happy dogs. But there's a problem. I could find a dog biscuit supplier, set up a template website overnight, and we'd be in competition by the morning.
I used that example in Chapter One of The Subscription Playbook to make one point: a subscription on its own isn't safe. You need something that stops people like me from taking your customers. That something is an economic moat.
What does economic moat mean?
An economic moat is a lasting advantage that protects a business's customers and profits from competitors.
Think of an old castle. The moat didn't make the castle bigger or richer. It made it hard to attack. A business moat does the same thing: it makes your customers and margins hard to take.
The term comes from Warren Buffett. In 1995, at the Berkshire Hathaway annual meeting, he was asked what he looked for in a business. His answer: "We're trying to find a business with a wide and long-lasting moat around it."
The important words are long-lasting. A head start isn't a moat. A clever feature isn't a moat. A moat is what's still protecting you in five or ten years.
Where do moats come from?
Morningstar, which gives every company it covers a moat rating of wide, narrow or none, lists five sources:
| Source | What it means | Example |
|---|---|---|
| Intangible assets | Brands, patents, licenses | A brand people pay more for without comparing |
| Switching costs | It's painful or risky to leave | Accounting software holding years of records |
| Network effects | More users make it better for everyone | Marketplaces, messaging |
| Cost advantage | You can profitably charge less | Scale, location, process |
| Efficient scale | The market only supports a few players | Airports, pipelines |
Morningstar's wide moats are expected to last 20 years or more; narrow moats at least 10.
The MOATS framework
In Chapter Five of the book, I turned the idea into a checklist owners can act on:
- Marketing supremacy: acquiring customers cheaply, and a strong brand.
- One: no single point of failure.
- Audience: low customer concentration (no client above 10%, top five under 25%), network effects and ongoing usage.
- Toughness: a sustainable competitive advantage, high gross margin and scale.
- Switching: high switching costs and being embedded in how customers work.
You don't need all five. But the more you have, the wider the moat. Score yourself with the MOATS Scorecard.
MOATS ScorecardScore your business on the five moat factors.Open the free tool →What people get wrong about moats
Moat vs competitive advantage. Every moat is a competitive advantage, but not every advantage is a moat. A lower price is an advantage until a competitor matches it.
Moats last forever. They don't. In the first half of 2026, Morningstar downgraded 59 moat ratings and upgraded only 18. AI has made some advantages, such as owning content or a simple software workflow, much easier to copy. See moats in the AI era.
Bigger means safer. Size helps, but a big business with one major client or one marketing channel has a single point of failure. That's the "O" in MOATS.
How wide is your moat?
Score your business on the five MOATS factors with the free MOATS Scorecard.
What to do next
Write down the one thing that would stop a well-funded competitor taking your best customer tomorrow. If you can't name it, you don't have a moat yet.
Then read the full chapter on how to build a moat, work through the MOATS framework factor by factor, and look at competitive moat examples such as how Stripe's moat got wider.
Back to the subscription and pricing glossary.
Frequently asked questions
What is the difference between a wide moat and a narrow moat?
The terms come from Morningstar's moat ratings. A wide-moat company has advantages Morningstar expects to last 20 years or more. A narrow-moat company should keep its edge for at least 10 years. Companies with no moat may be profitable today but have nothing that stops competitors eroding those profits.
Can a small business have an economic moat?
Yes, though it usually looks different from a global company's. A local business can build a moat from a loyal community, strong word of mouth, long-term contracts, being embedded in clients' processes, or a cost advantage from scale in its area. The MOATS framework was written for exactly this kind of owner.
Does a moat affect what a business is worth?
It can. Buyers pay more for profits they believe will last, and a moat is the reason to believe it. Recurring revenue, low customer concentration, high switching costs and strong retention all tend to support higher valuation multiples. If you're planning to sell, it's worth working on your moat years in advance.
Is brand a moat?
Sometimes. A brand is a moat when customers will pay more for it, or choose it without comparing, for years. A well-known name that customers would happily swap for a cheaper equivalent isn't a moat, it's just awareness. Morningstar groups brands with patents and licenses as intangible assets.
Get both books free
The Subscription Playbook (ebook + audiobook) and Feed a Starving Crowd, instantly. In Australia? Claim the free hardcover.
Robert Coorey, MBA
Robert is the author of The Subscription Playbook and Feed a Starving Crowd and a Director at BPAG Accountants in Sydney. More about Robert.
Sources
- Morningstar, Economic moat ratings: how competitive advantages stack up (2026)
- Morningstar, Economic moat (investing terms)
- Business Insider, Buffett on moats
Facts and prices checked 27 October 2026. Spotted something out of date? Tell us.