Economic moat

Competition law
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Basic concepts Barriers to entry Competition Effective competition Competition law theory Economic moat History of competition law Market concentration Monopoly and oligopoly Coercive Government-granted monopoly Market domination Natural monopoly State and Legal monopoly Market power Market share analysis Monopoly profit Price gouging Relevant market Regulatory economics
Anti-competition Collusion Dividing territories Formation of cartels Price fixing (List) Bid rigging Tacit collusion Occupational licensing and closure Cornering the market Embrace, extend, and extinguish Exclusive dealing Horizontal integration Mergers and acquisitions Monopolization Non-compete clause Misuse of patents and copyrights Predatory pricing Dumping (pricing policy) Product bundling and tying Raising rivals' costs Refusal to deal Group boycott Essential facilities Regulatory capture Noerr–Pennington doctrine Parker immunity doctrine Rent-seeking Vendor lock-in Vertical integration
Measures Herfindahl–Hirschman index Lerner index Market share Profit margin SSNIP test
Mitigation Excess profits tax Local-loop unbundling Market share liability Merger control
Competition regulators List of competition regulators International Competition Network
Law portal Outline Lists Index Category

An economic moat, often attributed to investor Warren Buffett, is a term used to describe a company's competitive advantage. Like a moat protects a castle, certain advantages help protect companies from their competitors.