There are piles of obscure things for which physical (sometimes bootleg) media exists but no seeders.
For example the mexican hacking drama Control Z, I found 0 complete rips even on private trackers, but I did find some nice blu ray bootlegs with cases and cover art.
Even with blu-ray rips in hand, burning a disk myself and putting it into a nice recognizable case that fits in my blu ray wall cases is a pain in the ass and I would rather pay someone else for this service.
Plus it makes it way easier to hand select shows to hand a kid to play in a portable media player, and avoids the need to give them unrestricted alone time with an internet capable device.
I prefer official copies but if the studios do not allow them and thus do not want my money then bootlegs it is.
You're on a site called Hacker News, and don't know how to burn a video file to DVD?
If I were worried about longevity, I would not personally rely on a bunch of DVDs I burned.
So load the files onto hard drives as a backup. That's what I do.
It doesn't seem like you're looking for a solution, just a method to hear yourself complain.
It seems like your intent here was just to be condescending and rude.
Knowing how, and being willing to do it for piles of titles and make cases that are nice to display and browse in the real world alongside mass produced copies, takes a lot of effort and I have better things to do with my limited time.
As is tracking down very rare titles in blu ray quality. Often easier to just buy the most decent cased copies I can and rip for long term storage.