Re: On being slowly boiled alive with video standards
no-one 'replaces' their DVD collection unless something new/better comes along.
I think VHS to DVD was the last time people fell for this ruse. The main changes people notice are the improvements in the codecs: DVD looks shabby on a HD screen because the MPEG artefacts are sharpened. If pushed people can notice the difference between 720p (or lower) and 1080p but that requires concentration not usually associated with the living room.
You have already purchased the viewing rights to whatever it is so you shouldn't have to do so again for a different format. If Hollywood wants us to change formats something like an incentive to trade-in would do wonders.
Google and Apple already have the infrastructure for 4k but Google prefers (rightly in my opinion) WebM over HEVC which is why all new Android devices have to support it in hardware: the format wars aren't over.