Probably not, except cost. It would be too expensive to compete with the national providers and then you would still need to interface with them for any service outside of the city. It's possible, just not the intended use case and not a logical use.
I remember people making very similar claims about AWS EC2 in 2007.
Ah, so the mythical beast of future Amazon 5G use cases can be anything I want then, right?
How about unicorns?
I see what you’re saying, but just because a similar statement was made about another service, does not mean the outcome will be the same in this instance with vastly different dynamics at play.
Wifi adapters are cheap and everywhere. For 5G tot surpass wifi it will have to match that. Laptops with 5G are not that common yet. ESP like controllers with 5G I haven't seen yet.
One of the advantages is 5G operating outside of the ISM bands. That helps a lot with stability and preventing interference. It also means this is not for individuals in their home. If licensing is made so accessible that people at home can use it you will again get overlapping frequency use and increasing interference. If it not made this accessible I don't see the availability of cheap clients solved because the market will be limited.
It's fairly early but within 10 years, every device will have 5G