Their unlinkable TOS says no servers.
I can do all those things on my 10USD/month 20/20 mbit home net in Poland.
This seems to the ToS element you mention: http://support.google.com/fiber/bin/answer.py?hl=en&answ...
That said, few startups should be hosting their own servers, no matter the speed of their internet connection. Everything else you do will be blazing fast though.
I always thought this was primarily because of bandwidth and scale issues. Removing the bandwidth issue leaves the scale issue, and that's just a matter of how far you're willing to go in your own home, isn't it?
I think that's the wrong view, though. Maybe what happens when people get that much bandwidth is, they will naturally start running more servers!