Re: What about auto-updates?
You've kind of answered yourself in the same comment as to why 5G makes a difference.
The capacity of the cell increases. A bigger cake sliced up works better than a smaller cake. And with other bands being enabled, they are also more than one cake to slice up now.
And "up to" is not "magical" term - it is governed by the laws of physics. It isn't theoretical either, the speed can be seen and measured if the channel conditions are met.
If you want the peak speed that you incorrectly describe as "theoretical", you just have to be willing to pay a lot of money for it. Like a leased line.
Use case - your mobile can be the *source* of the 4K video to stream. 4K live streaming.
"MNOs clearly have no ambition to create a high speed domestic offer to replace fixed line"
You clearly are not aware - in the UK - http://www.three.co.uk/Discover/Devices/Huawei/HomeFi?memory=0&colour=Black
And if you want the 5G example - https://www.verizonwireless.com/5g/home/
PS: marketing hacks selling new shiney is when they label 4G technology as 5G as AT&T has done and there is no engineering behind it. There is real technology behind 5G.
People like you had a rant for 3G, 3.5G, 4G, 4G+ LTE advanced.
I am pretty damn sure, barring the odd one, no one wishes networks were still on 2G GPRS because the newer G's were all "marketing shill" and "a waste of time".
Stop ranting and start reading up on what this actually is.