In high density housing the low range/penetration power is a positive. Having lived in an apartment building where all the neighbors (in three dimensions) also

In high density housing the low range/penetration power is a positive. Having lived in an apartment building where all the neighbors (in three dimensions) also had 2.4ghz wifi I can tell you that having to find a frequency band that isn't congested in that situation is a hassle. And I suspect that the knowledge that congestion and selecting a frequency band is even a thing is not very common.