They would choose pleasing the users.
I suppose any company that works out how to increase revenue while upsetting and alienating it's users could possibly implement said ideas. But if you're smart enough to do that, I would guess you would also be pretty successful at the traditional approach of increasing revenue by pleasing your users?
I often heard that google's customers are its advertisers, and I want to ask why the users aren't considered end-customers since they and their interaction with google provides the majority of the MONEY that feeds the ecosystem that feeds google?
No, Google's customers are primarily its advertisers. Optimizing advertising revenue has some overlap with pleasing users, as you note, but if a decision needed to be made between pleasing users and increasing revenue, there's no doubt about which way it would go.