Imagine you’re in a game with one objective: a bestselling product or service. The rules? No marketing budget, no PR stunts, and it must be sustainably successful. No short-term fads. This is not a game of chance. It is a game of skill and strategy. And it begins with a single question: The answer doesn’t live in the sustainably successful products or services. The answer lives in those who use them.given competing products of equal pricing, promotion, and perceived quality, why does one outsell the others?