In Rural areas some people need longer range wifi. IoT devices in different buildings or data service for things on a farm.
If the costs were lower, I deploy something in my neighborhood. For whatever reason, my neighborhood has terrible LTE service. I don't know the exact reasons why but I suspect I have poor service either due to geography like we're using another counties cell tower on a butte 5 miles away due to line of sight issues or maybe there are metallic properties of the land here on our canyon rim (mostly lava flows.)
As my spouse and I bike, take walks or drive to work I would love to have data service in that few mile radius around my house. If my phone could have an eSIM with my provider but a SIM with my own private LTE and a meeting call can fail over between data services, I would have a lot more flexibility.
I would have a lot of other use-cases with IoT and maybe quadrupeds as things like that become more generally available but data within a few mile radius would be the first thing.
I suppose I could get four 90 degree antennas at a higher db power output and blast my neighborhood with wifi but that has a lot of downsides.
That works fine if the use-case allows for high-latency and doesn't need TCP. To your point, I would imagine most all home use-cases are fine in this regard.
