I don't think it'll happen in areas with wide geographic coverage, like the US, anytime soon.
Sure, 5G carriers salespeople will promise you the world, but if you actually bite, you'll see that a lot of it is just promises, at this time.
In the current scheme with relatively limited towers and tower backhaul, it's just not doable.
I think they'll need, at a minimum:
- Far more spectrum
- More microcells
- More backhaul
Maybe. Plans seems to be capped but seems to be quite generous (1TB for $85, Telstra in Australia). Vodafone offers an unlimited plan.
I am not so sure about coverage (at high bandwidth) once you get away from the centre of a city; the impact on available bandwidth with a large number of users in the future; and the impact of interference.
I like the predictability of hardwired connections that will probably always be ahead of wireless technologies in speed and reliability.