Well, mine from 5 years ago still are viewable.
However, I cannot play my old Bruce Springsteen albums (records) because I don't have a record player anymore.
I also can't play my cassette tape of 38 special because I don't have a cassette player anymore.
I also can't play any CDs (unless I'm in my car), because I don't have a CD player at home.
And finally, I can't play DVDs anymore because I don't have a DVD player anymore.
Technology marches on. I've bought and rebought multiple media versions of the same thing due to changes in technology: cassettes, records, CDs; Betamax, VHS, DVD's.
Your argument is tired and irrelevant because technology will obsolete it one way or another.
And if you really do like watching crappy old VHS on your new 75" 4K tv, then god bless you, because that would make my eyes bleed. (Seriously, if you do, then none of my comment should apply to you, because you are keeping the flame of old tech alive, and my props to you.)
Side note about technology - I have old 3.5" hard drives that just aren't worth keeping around too, and are too hard to securely erase, so I destroy them physically. (I just tried to securely erase an old 50GB external spinning disk two weeks ago and it was painful. I decided a ball peen hammer was a better approach.)
That is what a purchase means, it's supposed to be permanent, not subject to anyone's decisions on whether that music should remain available or whether it's worth to re-issue it in a new format. I would not be able to re-buy some of that music even if I wanted to (weird local bands that are not available anywhere now), but there's no reason why I should have to - digital data does not degrade, so a single copy should be sufficient forever.
It's never a continued guarantee, but all the DRM'ed stuff (movies, songs) I bought on the iTunes Music Store in 2009 are still playable today.
And yes, while $30 is expensive in comparison to other companies' rental prices, I remember that many new movies (e.g. Deadpool 2) are at first only available for sale on iTunes and only later do they add rental options. Plus, for movie fanatics - who tend to be main buyers in the first 1-2 weeks, Disney is not competing with online rentals, they are competing with 4K Blu-Ray.
So if they can provide an experience that lets me watch a movie at 4K with HDR and a decent bitrate on my offline TV, I'm in at $30.
I feel like Tenet is seriously screwing up here. I'd love to see the film and I'm OK with paying $30 for the whole family. But Cinemas are closed, there are no streaming options, and they don't even have a Blu-Ray release date yet.
With that in mind, I'm not surprised that some of my friends have opted to watch a low-quality illegal cam recording of it, instead of waiting 5+ months. Warner Brothers could have monetized that impatience, but they screwed up. Let's hope Disney will do better by offering paid legal downloads on day 1, even if it's as expensive as cinema used to be.
And if you don't believe that impatient movie fanatics are a market, consider this:
https://www.cinemablend.com/new/New-System-Allows-You-To-Str...
https://www.dailymail.co.uk/sciencetech/article-3464839/The-...