More about the standard here http://en.wikipedia.org/wiki/IEEE_802.11ac

Though I would wonder what the range is , and the maximum bandwidth that can go into an AP. So far, it appears, the maximum bandwidth that an AP can take has been the limiting factor of deployment of 802.11 x APs in urban settings, though I wonder if deployment of many APs would not have been an option.

Maybe ISPs aren't interested at all?