If that was the case, shouldn't the exact opposite happen? The Subject-Expectancy Effect states that a person's expectations directly influences their views.

http://en.wikipedia.org/wiki/Subject-expectancy_effect

I don't think expectations has much to do with it. Very few people (Issara, Lilly) actually referred to expectations at Google. There is a recurring theme of employees complaining about management/bureaucracy, salary, hiring, and job satisfaction.

Even though you said "basically", it seemed to me like you are generalizing too much (sorry if I'm wrong and hypocritical). Some people (search for Aaron on the page) got a job there out of necessity, not purely open choice.