I also have experience with rural P2P/P2MP & cellular fixed internet.
This was early-mid 00s tech, I'm not sure where the tech & price/performance is since.
The main rural area we were covering had the handy advantage of being mostly flat with a bunch of handily placed tall hills/mountains that were also being used for existing TV broadcasting & Cellular coverage so we were able to hook into existing power supply/backhaul (& maintenance tech time).
We were able to cover a pretty large area with quality connections at affordable prices.
A lot of other places with less ideal geography this setup wouldn't have worked though because a lot of houses would not have Line of Sight due to intervening hills and/or lack of prominent hills to put basestations on -> only fairly short ranges being possible etc.
I think within a limited area with handy geography, small ISPs setup in this way can probably still work nicely especially with local Govt assistance/ownership & absent Govt subsidised/large commercial competition.
In our case central Govt forced/funded/subsidised first ADSL2+ upgrades to even very small towns which also meant fibre first to the Exchange & then to Cabinets (and the equipment used supports VDSL so that also became available) -> each one bought online would strip a bunch of customers from our potential pool.
Later, Govt started funding/subsidising FTTH and a Rural 4G cellular rollout.
Fibre obviously didn't really take away users who weren't already likely to have gone to ADSL2+ first but even though they over-promised & under-delivered, the 4G was the death-knell for us, though a big part of our problem was when we had funding available, newer tech gear wasn't ready yet and by the time the newer gear was available we no longer had funding.
Regarding satellite:
Traditionally uses Geosynchronous satellites ~36,000km up.
Its a
long way out there
https://upload.wikimedia.org/wikipedia/commons/b/b4/Comparison_satellite_navigation_orbits.svg
* 2 for the trip back = about 350ms minimum lightspeed latency (plus trigonometry for latitude/longitude difference vs the satellite & various stuff for it being radio data, plus whatever for the data to get to/from the groundstation)
At least the type we've had available here for residential users actually only used satellite for the download & needed a dialup connection for upload with all the pitfalls that entails for rural users.
Starlink (& various similar attempts before) use LEO (only a few hundred km) -> far lower latency (can never be better than surface fibre cables unless) and much lower transmitter power required.
But you need to have large numbers of satellites to provide reliable coverage & an ongoing replacement program = huge $$$ to get up & keep up -> previous attempts have failed before deployment or only been able to keep running with heavy Govt subsidies.
eg Iridium was within days of starting to de-orbit its constellation when US military stepped in with a multi-year guaranteed minimum-spend, later repeatedly renewed & they were able to wipe billions in debt from the launch program in bankruptcy.
I will be
very surprised if Starlink is able to break even without being largely dependent on massive US Govt/military subsidies. (probably whats been done so far already is)
We now have FTTH rollout to pretty much all urban areas nearly complete, 300Mbit/s min speed, copper is being actively withdrawn & 4G+ cellular coverage is 95+% household coverage on both major carriers.
Doesn't leave a
lot of users likely to want something like Starlink: some Muskovites (Elonatics?) will get it on principal, some urban types who can't/won't get a fibre or other type of connection for various reasons, possibly a decent chunk of properly rural users depending on how the actual price/performance is vs 4G & there are definitely some users out there in awkward valleys etc that are still stuck on old-style satellite.
Enough customers to support a small local marketing/logistics/support operation? Maybe but it'd have to be
very small.