You will need direct line of sight to a tower optimistically a mile away. Otherwise you'll fall back to '5G' on traditional 4G spectrum and you won't get any faster speeds.
To be fair, both Fiber and Coax have far worse "penetration"; Changing the definition of a 5g fiber connector from "wireless to devices inside of a home" to "a small antenna you put on the outside of the house or by the window and a wifi router inside" drastically changes the definition, keeps infrastructure cheap, and the cost at the home is still significantly less.
I had the EVO 4G on WiMax, had amazing speed, especially near the highways before anybody else did. Also made for a great hand warmer.
The point is that 5g may provide the product that most people want when they want fiber; have less additional infrastructure cost, and the wireless penetration doesn't matter if we consider a base station -- or a physical install (as required by fiber or coax)
That reason is: it's far more difficult to provide reliable service this way than it seems at first.
The verizon 5g home looks pretty good [0] if your current options are only dsl or cable which they are for a bunch of americans. It's even got a 4g backup connection.
[0]: https://www.reddit.com/r/verizon/comments/9lqp6n/i_got_5g_ho...
There are a bunch of proposals on how to do this (I think Artemis networks is one if I remember the name). The problem is that existing roof rights don’t map well to a bunch of microcells.