What is an economic moat?

I develop MoatCheck, which is mentioned in this guide.

Common sources of advantage

Moats can come from different business characteristics. Network effects make a product more useful as more people use it. Switching costs make changing providers inconvenient or risky. Cost advantages let a company serve customers profitably at a price others cannot match. Intangible assets, such as trusted brands, licenses or intellectual property, can also matter when they produce a real economic benefit.

Start with the customer

Ask what keeps customers choosing the company. Is the product embedded in a workflow? Is there a meaningful difference in trust, convenience or total cost? A company can have a popular product without having a durable moat, so look for evidence that the advantage survives competition.

Test whether the moat is durable

Research is less about finding a flattering description and more about trying to break it. Read filings and company disclosures, compare competitors, inspect changes in margins and customer concentration, and look for the cost of maintaining the advantage. Then ask what technology, regulation, pricing or customer behavior could weaken it.

Use a structured checklist

1. What is the claimed advantage?
2. Which customers benefit, and how strongly?
3. What would a competitor need to replicate?
4. Is there evidence the advantage has lasted through competition?
5. What could erode it?

A research aid, not a verdict

Note: This is educational content, not investment advice or a recommendation to buy or sell any security.

Turn a claim into a falsifiable hypothesis

Fictional example: a payroll provider claims high switching costs because replacing it requires migrating records and retraining staff. Look for retention evidence, contract terms and implementation effort; then test the opposite case, such as simpler migration tools or falling retention. A rising margin alone does not prove switching costs. Record which filing supports each fact and which information remains unavailable.

Keep an evidence trail

For each conclusion, note the filing date, period, document section and a short fact supporting it. Separate management’s claim from your inference and record missing evidence. MoatCheck can structure a first pass; verify its output against the filings. This is educational research, not a recommendation to buy or sell a security.