Google Fiber not only brings Gbps broadband they are encouraging it elsewhere in those cities and surrounding areas. I just wish Chandler was in the announcement as we were one of the first 4 cities to get cable broadband in the 90's largely due to Intel. The cities that Google Fiber picks are getting better internet just by being announced from Google and competitors alike.
Broadband cable during inception in the 90's was such a big leap it was almost magic from 56k to up to 6mb down when you were new on a node. It was unreal and the cable companies were heroes. They could have kept going, there are still only a small percentage of channels used for data/broadband. They can compete now but haven't, all that wasted on channels noone watches.
Now it feels like cities are winning the Google Fiber bandwidth lottery because broadband providers have been throttling in their extract phase for so long with no competition. Google Fiber is spreading competition and better internet almost as magically as the cable companies did with broadband in the 90s.
I think with SLC, Provo, and at least one of the small towns in the area all having fiber available, the rest of the front will follow suit... but it will not happen overnight.