to my knowledge, 5G and other cellular bands are regulated in most countries. You're dependant on an external decision if your area gets served.
If some radio bands with wide range technologies get unregulated for public usage and access to equipment is possible - then communities can decide on their own.
Wireless is a great solution when there is spectrum available. If you have access to low band frequencies as the cellular companies do you can blast through trees, walls, etc.
Even with that they need fiber to their towers to provide the speeds necessary
Yes, there's no suitable spectrum available to towers due to topography, etc..
I might have to build towers at both ends to run in a licensed range, eg: 11Ghz, and even there there's not good access. So I might still have to pay 20-60k to get access on top of the 5-10k for radios and registration of the licensed link. That easily builds 1-1.5 miles of fiber, and since I was just over 2 miles away from it, it became easier to just do that and have something reliable.
If some radio bands with wide range technologies get unregulated for public usage and access to equipment is possible - then communities can decide on their own.