In a lot of rural areas, wired interent won’t ever make sense. However, they could add more capacity and towers to the mobile wireless and let everyone use “cell” modems similar to the ATT Home Internet. They’d only have to run wires to the towers.
Bonus, there would be better cell coverage areas. There are still a lot of rural areas that have zero cell coverage.
Fwiw, I run my entire house off of an ATT Home Internet modem for the price of a cell phone. No, it’s not as fast as wired internet, but in my area, it works just fine for streaming/tv and obviously, internet.