Walmart ultimately measures everything against lifetime customer value. They don't really care about maximizing revenue on a specific trip because most people c

Walmart ultimately measures everything against lifetime customer value. They don't really care about maximizing revenue on a specific trip because most people come in to the store with a fixed budget of what they can spend anyway - but they sure as heck want you to return. Fixed income customers see things like an ultra clean speed and efficient store as 1) intimidating and 2) overhead that makes prices go up and "wastes" their money.