The mechanism must be observable
Possible explanations differ. Switching costs make customer change harder; a cost advantage permits a lower price; a user network increases product usefulness; a scarce resource makes entry harder. This is not a list of automatic winners. Each mechanism needs conditions: customers may change technology, competitors may gain a new channel and resource rights may expire.
Check not only a patent or recognisable name but also the cash result of the protection. If products sell only with large discounts, a strong brand may not create pricing power. If customers stay because switching is costly, assess whether retention and service costs are also rising. Revenue protection and profit protection are different properties.
Educational pricing-power test
A conditional company sells one hundred thousand units at 1,000 roubles. Variable cost is 600 per unit and fixed costs are 20 million per year. Revenue is 100 million and operating result before tax is 20 million. All figures are fictional; the model does not describe a real industry.
Suppose price rises by 5% while sales volume falls by 10%. New revenue is 94.5 million; variable costs are 54 million. After the same fixed costs, 20.5 million remains. A moderate profit increase is possible even with falling revenue. If volume falls by 20%, result is 16 million: the same price increase now worsens the economics.
The two scenarios do not reveal actual demand elasticity. They show what to look for: volume, discounts, customer mix and costs after conditions change. Management’s statement about a “strong brand” is useful only as a testable hypothesis, not as a ready model parameter.
Duration matters more than a flattering label
Create a calendar of events that could weaken the advantage: expiry of an exclusive contract, alternative infrastructure, expiry of protection or a customer technology transition. Not every event destroys the business, but each may change returns on new investment. A long forecast with unchanged excess profit needs stronger support than a short description of the current position.
Analyse accessible market size separately. A good niche may be protected but small; moving beyond it introduces different competition. High return on existing assets does not guarantee the same return on expansion. Mechanically multiplying history by growing volume often gives an advantage capabilities it never provided.
What could disprove the initial case
Set tests in advance: higher churn after a price increase, weaker economics of new sites, fewer repeat contracts or a reduced cost advantage. For an actual company, use official disclosures about business, risks and results rather than a selection of favourable presentation quotes. SEC guidance on reading annual disclosure helps locate these sections, but does not confirm protection for any issuer.[101](#source-cv-10k)
A useful conclusion has three lines: mechanism, observed support and failure condition. If support is absent, state uncertainty instead of arbitrarily raising valuation. Even a well-protected business can be expensive relative to future cash flows. Competitive-advantage analysis is not a recommendation to buy its shares and does not protect a market price from falling.
The advantage and its maintenance cost
Check the cost of preserving protection. If a brand requires continuous expensive advertising, do not both treat it as a perpetual advantage and exclude the sustaining budget from future cash flow. If switching costs arise from complex customer support, those support costs also belong in the model. The question is the mechanism’s net cash effect.
Try to describe a competitor that could bypass the protection. What resources would it need, and what prevents it from obtaining them? This thought experiment does not prove a future rival, but makes the argument concrete. “We cannot be replaced” is too strong without testing alternatives. Sometimes the most important competitor is outside the familiar industry and offers customers a way to abandon the spending category itself. Comparing only with current direct peers misses that risk.
**Related foundations:** [Fundamental analysis: test business history with numbers](/guides/fundamental-analysis/); [Intangible assets: value without physical form](/guides/intangible-assets/).