I think you're just in for a rude awakening if you expect the Google from 20 years ago. It's no longer a scrappy startup, it's closer to Microsoft at this point.
The thing that struck me about Google is that it's a really well running machine. The documentation is all there, the build system is easy, and just about every issue is fixed with a single form submitted or email sent. You quickly develop a very high standard for how an organization should function.
I think you left out the sarcasm tag
Compared to a lot of startups, it's not sarcasm
I'd be happy with the Google from 5 years ago.
Companies grow and they have to change. I was at a company that grew to about 10x the size of when I joined. It was still pretty successful but it was a different company. I didn't have the freedom and flexibility, there was more process, etc. Not as fun but you really can't run a 10x company like you run a 1x one.