So you have highly reduced key data for 420p with extra upscaling data for 620p at med -Low clarity and then the TV upscales it further. 170-220Kbit per channel over 1 40MBit band offering 220 channels.
Then you have the 720Kbit-920Kbit with extra touch up data that is 660p with touch up data and upto 900p med quality upscaling data this occupies 2 40Mbit bands 108 channels.
then the other 2 40 Mbit bands are for a 1220p -> 1600p 1.6 - 2.6 Mbit for 46 near UHD channels.
This is taking into account how well additive detail AI and general upscaling can scale for modern broadcast level TV 20 years from now.
Sky could offer additional 60 high clarity holographic service channels offering content where further content is via the stores using the internet. 320 near 8k UHD and offer 6,000 near HD channels and skip the other formats.
All the audio can be scaled to 96KHz 24bit audio and be more data efficient so the satellite radio can have like 8,000 stations.
This future TV will have more sport, more premium content, more special fx compensating for low budgets with more peoples stories being cooked up into to film and series and more social networking and metaverse content along with more foreign channels and more reality tv and golden oldies and documentaries and news content.