It has everything to do with the lack of competition. US tax payers paid $4 billion to AT&T in 2004 for fiber to -every- home. And that was never delivered, yet they keep getting more money. This is regulatory capture.
https://www.msn.com/en-us/money/general/at-t-wins-early-appr...
We’re talking about remote areas of the US that have almost no local population.
Why would a company put a cell tower in the middle of federal land where no one is allowed to live?