As I said tv shows produced HD long BEFORE anybody had an HD TV. I watch old episodes of Law and Order and West Wing in HD. Back then there was no tv to watch it on and no cable company to deliver it. It was also better to look at. This long narrow look is not.
So all the games, Youtube, Movies etc will only be viewable on Samsung phones. No tv's. No theatres. No Pixel or HTC or LG. Nobody id going this way.
Do you think if Samsung unilaterally built an HD TV NBC would have started broadcasting for it? It took a law from Congress!
Ok, you really need to do some research. The West Wing was on from 1999-2006, was shot on film, and 6 of the 7 seasons were broadcast in HD.
The first HD TVs hit the market in 1998. Broadcasts started toward the end of 1998 as well.
So yes, there were HDTVs to watch the West Wing on when it aired.
A format shift has to start somewhere. A huge manufacturer of mobile devices, plus a smaller one in LG, may just be that start.
2:1 was proposed in 1998 and according to IMDB over 700 shows/movies have been shot in the format. Netflix and Amazon Video have original series in that format. They are huge players.