Rinse repeat.
A lot of that has been happening for a long time now.
And, locally, there have been two ISPs set up (one by me and my friends) that aren't meant for public use, but to supply service to smaller groups. The one I set up was to supply internet service to a remote neighborhood that isn't likely to get reasonable commercial internet in the near or medium future.
Those two ISPs supply internet access, but they also operate an intranet that is mostly decoupled from the public internet.
All baby steps, and nobody is 100% "off the grid", so to speak, but it's a trend that started long ago and seems to be gaining a bit of momentum.
My prediction is that the web will ultimately be just for commercial use (it's already 90% there), and there will be a whole bunch of tiny networks -- that may or may not portal to the internet -- that will fill the needs that the internet is increasingly unable to fill.
edit: I'm studying ways to facilitate decentralized decisionmaking in small permissioned networks.