There are two things to remember about any wireless technology (neither of which are mentioned much by proponents of the technology):
1) The bandwidth quoted is shared by all users of a mast. 5Gb might sound a lot but when it's shared by 1,000 users it's less impressive.
2) Signal attenuation. You probably only get 5Gb if you're standing underneath the mast. Users at the edge of the cell with a couple of walls in the way get a lot less than that.
As Mr. S. says - the only way to overcome these problems is to install a large number of cells by which time you've pretty much duplicated FTTP hardware. Wireless is great for mobile use. But it will never compete with a hard wired solution where bandwidth demands are high and especially not when large numbers of people in a relatively small area require high bandwidth.
Edited by Andrue (Tue 23-Oct-18 20:01:18)