In the logic of Amazon, Customer obsession means making sure they remain customers, because Amazon is a net good in their lives. To Amazon, their labyrinthine cancellation process is like tricking your toddler into eating broccoli. Sure, it’s deceptive, but it’s good for them.
That's basically the same thing for all companies. Google believes its ads are genuinely useful to its users, so showing ads is a win-win situation for Google and for users. Showing Google users ads is like keep reminding a toddler that broccoli is good.
What does it mean to “believe“ in the logic of your employer? To my mind, it does not really matter whether you “believe“ the logic itself; only that you continue to labor under it.
A lot of people, especially younger ones fresh out of college, automatically believe in the "mission" and culture of their employer. They focus on what their employer does well in and has positive impact, and systematically turn a blind eye to where their employer fails.
That makes sense. I guess I never thought anyone actually believed these things, any more than they “believed” in the logic of a video game. To me, it was always just something you learned, the way you learn a language or a national culture. It’s a means to achieve a certain end (directly: the role, indirectly: $), not a thing to be taken any more seriously than that.