All these "experiments" are usually started in a few select big cities - usually the same over and over again - and in a few years, instead of catching on and spreading to the rest of America, in winds up in some sort of quick-buck scheme for the "innovator" (caps per usage, high fees, etc. ).
Wake me up when it's ready, boys, otherwise don't hold your breath.
I don't think that even Google has enough money to battle all the centralized monopolies that dominate the high-speed internet distribution. What are they going to do, bury the cables themselves?
This project depends too much on too many things outside Google's control.