One has to appreciate, however, that Google seems to seek out economic positions which allign their interests with the overall social interest. Surely, that isn't just happenstance.
Google: World-class PR. That's it. When something really hits their bottom line they will literally have no choice but to behave like every other corporation.
Actually, they already do. I've read an interview with their CFO a while back, and he said that a large majority of the company does traditional, non-cool corporation stuff. It is only trhe production department that does things in a hip way, and they're doing everything they can to publicize that, as you say.