"Own" the movie in quotes is interesting. Because you own the physical medium, but the data encoded on it is still copyrighted and can be treated in some ways like a license still. It is possible to obtain a legal copy of physical media and not be legally allowed to view it in certain ways.

Backups are legal (assuming you keep the physical DVD, like youve said, and dont just "make a backup" and then sell the original), but you don't just have carte blanche to the content still (ie, region coding has weird legalities to it, public viewing is still not allowed, because you havent licensed that right.)

That said, I still fully agree with you. I just find the "license" vs "ownership" topic interesting for physical copies. The fact that media companies are so strongly trying to limit your rights just means you need to make sure you keep what rights you do have. I spent 3 years personally backing up my wife's 1400 DVDs, because with that many of them, at some point the discs are bound to go bad.

Reference:

https://language-studio.clas.ufl.edu/copyright-law-and-educa...