Let's be honest by far the bulk of content except maybe landscape channels sucks balls at 4K. Botox dead faces, awful plastic surgery, crappy acting, set flaws, bad special effects, poor camera work, stupid shit like lens flare and the list goes on. Never of course to forget the blatant bullshit of 3D double vision (now there was a truth they managed to hide for years, lying bastards). DRM or more accurately the theft of everyone digital rights pushed under the PR=B$ lies of digital rights management (they really are sick people when they come up with that blatant double speak).
This has nothing to do with anyone's digital rights and everything to do with censorship in hardware, in your home, that you are forced to pay for. Don't pay a licence fee for your wedding videos, see them blocked until you do. Can't play old content on new hardware because you can not transfer it as you are actively blocked from doing because they specifically want to charge you for the same content over and over and over again, well, suck it on up losers. Are M$ evil, you, betcha. Why are the evil fuckers at M$ so desperate for it, monopoly in collusion with a 'PATENTED' DRT (digital rights theft) method, that is the pay off for them, that and a long term plot to become the dominant global publishers and drive most others out of business.