There's a map of community-owned networks, more than 750 communities across the United States have embraced operating their own broadband network
Map here:
Map here:
I'm planning on getting my Technicians HAM license sometime soon (I took one of the online practice tests "blind" and scored an 80 - so with some study it shouldn't be a problem).
Maybe after that if I can find some like-minded people nearby...
I suspect the Amateur HAMmers would detect and enforce that: I imagine there are HAM goonsquads.
That said, ham radio is a fun hobby regardless. If you are into IP stuff on ham radio, it's not too hard to get an ip on the ham IP block /8.
Amateur radio does have a tradition of self enforcement which is part of my the FCC continues to grant privileges. People practice RDF for fun but I know people who have used to to find people intentionally interfering with other stations.