6 ideas
Brands with smaller market share suffer twice: they have fewer buyers, and those buyers are also slightly less loyal. Loyalty cannot be meaningfully boosted independent of market share, so growth comes almost entirely from acquiring more buyers rather than deepening existing ones.
The bulk of a brand's volume comes from many occasional, light buyers rather than a small core of heavy loyalists. This means marketing should reach the entire category of buyers broadly, not concentrate spend on retaining the most frequent purchasers.
Brands grow by being easy to think of (mental availability — coming to mind in buying situations) and easy to buy (physical availability — present across channels, locations, and moments). Both must be built continuously, because they decay and competitors actively erode them.
Functional differentiation between brands is usually weak and barely noticed by buyers, who see competing brands as largely substitutable. What actually drives choice is distinctiveness — unique brand assets like colors, logos, and characters that make the brand instantly recognizable and retrievable.
A brand shares its customers with other brands in proportion to those brands' market sizes, not according to perceived similarity or shared positioning. This means competitors are mostly competing for the same broad pool of category buyers rather than carving out distinct loyal segments.
Buying behavior follows observable, repeatable patterns that hold across categories, countries, and decades — laws discoverable through data rather than assumed through intuition. Marketing decisions should therefore be tested against these established regularities instead of relying on plausible-sounding theories or marketer beliefs.