A "Moat" protects a company from competitors, allowing it to maintain high profit margins for decades. Think Coca-Cola or Apple. High Switching Costs: Companies like Microsoft or Oracle.

This rule requires the discipline to do nothing until the market crashes or a stock is undervalued.

Businesses that own a "must-use" service or infrastructure. 👤 Rule 3: Quality Management

Stick to industries you know (e.g., tech, retail).