Rural areas are getting fiber (I live in one; it's not as rural as it was when I was a kid, though, but what was?) which can obviate the need for faster mobile phones, as the Netflix et al streaming can rely on the in-home wifi. Wild guess is, 4G will see some slight improvements and remain the standard for a long time to come. The greater ($200-$300) handset costs for 5G make the buildout look kinda ugly from the perspective of trying to sell it. If the network is available, it could leave a premium phone opening between now and when Apple rolls out theirs. But that won't last.
We’ve been laying fiber for one of the major carriers for about two years how. In what we designate a Central Business District it can cost over $900 a FOOT to lay fiber. The suburban areas are about half that but it’s much more spread out. So the costs are about even when the numbers are run.
L