My sister in law has a problem to get a good Internet connection. Her house is a few hundred meters from fiber, but no company is interested to connect the few houses on her street. She has a picky LTE with not enough transfer limit. I can see from her home a light industry building, that seems to be high enough to be visible from most fiber-orphaned houses. AFAIK it has fiber connection.

The question is how could I setup a radio ISP. I read about Ubiquiti's airmax, which has relatively cheap and nice devices. But I lack terminology or knowledge what is required for all this to work. I also know that for this idea to work I would have to share the connection with more neighboring houses, to amortize the cost of the rent on the roof. So what should I know to setup an ISP from a single roof to multiple houses?

I think this idea is far fetched, but it's something I would love to read about those modern radio technologies, but I don't know where to start.

Thanks