When I was in the US, certain companies (like Discover) had customer service which were a joy to interact with. An almost immediate connect with a human, who had the permissions to make a relatively large chunk of problems go away / actually have the right information at hand without having to transfer or hold the call. I would not hesitate to do business with them again if I could.

Good customer service inspires loyalty to a company in a way discounts/advertising cannot. Their topline might not be the best, but they'll never go out of business.