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That seems a bit like those technology predictions gone wrong
"I predict the Internet will soon go spectacularly supernova and in 1996 catastrophically collapse." -- Robert Metcalfe, founder of 3Com, inventor of Ethernet, 1995.
4K is already the present there are affordable tv and with fiber to the cabinet you can stream the required 30-35 Mbps soon 1080p will be legacy and 720p is already dead three four years ago
Nobody cares about 4:2:2 in the consumer markets the eye is more sensitive to resolution than to anything else so there is a reason why all manufacturers are pushing for it.
3D has been a bit of a flop but 4K is present not future
Erm we can do right now with my 1080p vids and without 4;2;4 or whatever you do with yours! Lol