Its all a bit hand wavy nonsense. Own a physical copy? How long until its unplayable because either the media corrupts or the player isn't available? The only real "ownership" is the IP, everything else is just renting.
Plastic discs are the optimum data distribution format. They degrade in the same time frame as a paper book, essentially lifetime, you retain legal rights like the first sale doctrine, you can easily format shift for safety and storage, and nobody can take any of that from you ever, and you can use that data however you like, as long as you aren't trying to sell bootlegs.
Books and plastic discs are infinitely better than the digital realm. The consumer rights are so much stronger and better.