Having the 5G logo on your phone doesnt necessarily mean your phone is speaking 5G. It's...complicated. - Most US operators do not have ubiquitous 5G radio coverage, so, they do what is called 5G NSA where your traffic ultimately ends up veing processed by the 4G core infrastructure that they have. Which is already overloaded and a bit creaky. - Some operators can do real 5G, "5G SA", where the whole flow end to end…
The “real” 5g isn’t for your phone, it is to replace your home internet. For that, you want fast and low latency and that means a dense amount of cell towers. The fact that “real 5g” has a shorter range is actually a positive. It means you can make your shit super dense.
In scattered environment the range is too short to excuse the cost of covering it with 5G
There is no niche for it except for "my landlord didn't install proper internet so I use 5G" coz it happened to be alreadhy in range