Being uneducated on 5g in particular, low latency fast internet can result in proliferation of mobile ar/ve devices, and bring internet to towns that otherwise dont have cable/fiber wiring, etc.
There are some efforts in robotics that would have much better ux if they had faster internet in remote places.
You can imagine stadia running on mobile on the extreme. Everything cloud streamed.
Faster internet means when it matters you wont have to wait downloading a large binary, even though you dont need to be utilizing it 100% of the billing cycle.
A mobile surgery center can be operated by a world renowned md, at the comfort of yheir home