"The customer is always right" isn't some sort of religious belief, it's the fact that if you tell a customer that they're wrong, in the best case you're going

"The customer is always right" isn't some sort of religious belief, it's the fact that if you tell a customer that they're wrong, in the best case you're going to lose that customer and in the worst case you're going to lose a lot more customers if that one has a big mouth. It's a heuristic saying that 99% of the time it's better to lose a trivial amount of money on a customer than piss them off. Everybody is right on matters of taste, so that's just vapid. It's an area for which it has long been well known that accounting doesn't apply.