Well, someone else would have to address that. My non technical view is you'd have potential for dead spots still.I think this a great discussion, but I'm admittedly not extremely well versed on the particulars. Isn't 5G supposed to solve a lot of these issues once they make the strides to get there? Then, basically you'd have cell data that runs at near broadband speeds where you could then use your cellphone as a hotspot and never need to separate your internet service from your cell bill.
"Near broadband" may not also be a terribly relevant standard, either.