Briefly, here are some of the challenges WISPs run in to as they scale:
-Getting contracts with relay sites / towers / places to put their wireless infrastructure. This is one of the most time consuming parts of building a WISP, and it's primarily just about waiting and red tape and making lots of phone calls.
-Geographic limitations - IE we have our little valley covered and we've got as many customers here as we're gonna get, now what? It would cost $XXX to go over to the next town/city/county and we don't really have that or don't have the resources to feel like we could handle that logistically, so we're just gonna stay where we are.
-Network upgrades. IE 10 years ago a 5Mbps connection was pretty good! So we built a network that would deliver that. Now customers want 50Mbps, and the technology is there, but we don't have the capital or the know-how to go do a full network and technology upgrade.
I was probably imagining it or projecting my perverted ideals but what a beautiful, refreshing moment it was :)
There are of course also businesses in this market that want to continue growing and I don't think there's anything wrong with that.
A few years ago when WiMax was gonna be the 'next big thing' in wireless I remember a lot of people asking what we (WISPs) were gonna do cause it would put us all out of business. Two things happened: 1) We deployed WiMax gear for our customers. If WiMax succeeded we succeeded with it. 2) WiMax was terrible, we could provide much better service without it than with it. Currently many WISPs actually are deploying 4G-LTE equipment for their customers, and that actually works really well - so that's a good situation for WISPs and their customers. Yet to see what 5G will bring.
What is the use case here ? Is this for business customers ? How do they manage regulations around 4G frequencies ?