Earlier quoted context omitted.
> which means a business should always have the best interests of customers at heart and always assume good faith I thought it meant, at least originally, that a customer's choice to shop, or not, at your store needs to be treated as your failure to attract the customer, not the customer's failure for making the "wrong" choice.
https://en.wikipedia.org/wiki/The_customer_is_always_right https://en.wikipedia.org/wiki/The_customer_is_not_a_moron
Others said slightly different things. Like Cesar Ritz who said "The customer is never wrong", where the idea is that the moment the customer complains, you take action to solve the problem the customer has stated, even if they are incorrect.