[DenisM]

If there is more demand for cell service the cell companies will build more towers. Lower the power levels and use higher frequency bands to reduce interference.

By your numbers, 200 clients x $50/mo $10k revenue per mo for a tower. A new cell tower costs $150k, so it pays for itself in 15 months.

[martinald]

It can take years in the UK to add a new cell tower. Apply to the local govt for planning, then more applications to dig the road up for fibre. And then you need a power connection which often aren't trivial or quick to get. $150k sounds unbelievably low.

[lostapathy]

You have to remember that the denser you install towers, the shorter and less obtrusive they need to be. I.e., you don't need to be nearly as high if you only need line of sight over one mile instead of ten.

[DenisM]

https://www.quora.com/How-much-money-would-it-cost-to-build-...

[VectorLock]

Do what Verizon did in Boston. Get the local government to give you access ostensively for FTTH broadband like FiOS then go "psyche!" and use the fiber to run cell towers.