Economic moats: look for evidence of a competitive advantage
A competitive advantage helps explain why customers keep buying and why competitors struggle to take the profit. Calling a company a leader leaves both questions unanswered. Look for a mechanism and evidence that it persists.
Three mechanisms to examine
Switching costs may include retraining, migration and disruption. Ask how much those costs matter to a customer and whether a rival’s saving could compensate for them.
Scale can spread a fixed cost across more units. In a hypothetical business, a $10 million fixed annual cost divided over one million units is $10 per unit; over two million it is $5. Competition, capacity investment and variable costs can still change the result.
A brand may help retain demand or support prices. Check whether customers keep paying when prices rise, rather than treating recognition as proof of pricing power.
Try to disprove the claim
Read customer concentration, retention data where disclosed, margins and risk factors. A business can grow rapidly while depending heavily on one contract or a temporary product cycle.
Use your company review to record the strongest evidence against the proposed advantage. That makes the next report easier to assess than a page of favourable adjectives.
Separate business quality from the price of its shares. A durable activity can still be purchased on assumptions requiring more growth than it delivers.
Finish the note with one testable question for the next reporting period, such as whether customer retention held after a disclosed price increase. If the report does not provide the necessary data, keep that uncertainty visible.