You're correct but Ill add some nuance: higher frequencies = higher speeds, but lower propagation out in the real world. So you solve the propagation issue by p

You're correct but Ill add some nuance: higher frequencies = higher speeds, but lower propagation out in the real world. So you solve the propagation issue by putting the radio closer to users, eg on street poles. But you also take care to propagate the signal optimally, eg instead of blasting it out in a wide cone of coverage, maybe you use beamforming and MIMO to focus on where the users actually are. Additionally 5G tech also provides some energy efficiency benefits on the radio. The other things that cellular has over wifi are much better handover between radio access points (almost seamless on cellular, less so on wifi) and better behavior in environments where multiple users are transmitting at once (wifi is similar to csma/cd, like in the old days of ethernet). This is going to change with wifi 6E, but that isnt mainstream yet.