that is your opinion, the broadcasters have a very different view, I will take their side considering they are stream-casting the terrestrial channels in MPEG4 via multiple platforms, if they were not then Freeview would be a very different service.
the fact is that anyone with access to Freeview can view terrestrial channels via several platforms not just old fashioned antenna and TV, that’s the whole point of it, the broadcasters would have real time data of how many people are viewing the CDN servers at any given time, then there are many TV’s that have ability to use the broadcaster apps to view live stream TV, for example I know many people that do that for 9Life which is 720p HD v the terrestrial 576i, so to dismiss it is a failing argument, put it this way, its where TV is heading towards, well to say it another way, that is my viewpoint about it.
Wont make a difference at all as the encoder has ability to set aspect ratio while still keepping resolution^. the fact is that UHD is not really 4K and as such should not be marketed as 4K, they should market it as UHD which is what the TV set makers are doing.
^Which is why a lot of SD content at 720x576i is forced to 16:9AR as its ratio is 65:45AR
A good encoder will have these options built into the software.
and also anywhere up to 250Mbits … good luck trying to stream that with our lazy NBN MTM and sure you can via LTE-CA but you would need a heap of data to do so.