A human adult with average vision can't distinguish anything much above current HD resolutions from normal TV viewing distances at typical physical TV screen dimensions either. This is one of the big problems all the businesses creating flashy new 4K TVs haven't quite worked out how to deal with yet.
Meanwhile, plenty of people still have DVD players rather than Blu-Ray, because even moving to HD doesn't make much difference for a lot of material in practice, and the old "get them to buy Star Wars for the seventeenth time two step" has run out of music.
Then you have to consider the rise of on-line sources and the generally poor experience of the physical disc systems. Most of that poor experience isn't actually because of swapping discs. It's because of all the other silly things that all legally manufactured players are required using tortured legal tricks to implement, preventing otherwise obvious improvements in competing devices such as skipping to the !~%# movie straight away.
So personally, I'm expecting 4K and other very high resolution formats to flop outside of niche markets, like say luxury home cinema systems with a projector and a screen several metres across. Even where they do get adopted, I'm expecting the market to demand less messy distribution, which would make any sort of disc-based successor to Blu-Ray even less likely to succeed.