I really wonder about the people who work at Google. Surely they have people whose ideals are higher than this? It seems obvious that Google is a real threat to the freedom the internet originally made possible. But engineers still sign up in droves to work there? What kind of engineers are these? Do all of Google's employees simply disagree that Google is a threat? Do they not care? Are they just financially scared…
The short answer to your question is simply apathy (no one cares) and/or mild psychopathy (completely in a bubble to a borderline pathological degree.) They're not evil, they are just people.
Here's a dark little anecdote of corporate social psychopathy:
One day I realized I hadn't seen Chad (not his real name) in a few few days. Checking email lists, I discovered that his last email was ten days earlier. I went to my immediate boss and asked him about it and it turns out Chad had suffered a stroke and dropped at his desk one evening after most people had already left.
No one mentioned it.
He eventually came back to work after a couple of weeks with as little fanfare as he had left and went right back to work.
I was pretty freaked out that a coworker having a stroke was treated as no more of a big deal than someone dropping their coffee on the floor.