I never said anything about copyright giving you right to copy movies. But if I own a CD, blu-ray or a book, I physically OWN that blu-ray or book. I can stick it on a shelf, lend it to someone, give it away, burn it, sell it on e-bay. It doesn't entitle me to duplicate it, but the media is mine, as is my right of ownership in law.

Conversely if I buy a digital movie on Amazon (or any other provider) I've bought a license to it. Next time I go view it, the movie might have gone. Or maybe Amazon just shitcans the entire service (as it has before). Or maybe they just decide to ban my account for whatever reason. Or maybe they don't like that I've moved to another continent. Whatever the reason I have no recourse. Nor can I sell my license, lend it, or anything else.

That's the problem I'm talking about. There is no reason that when I buy a movie from Amazon or another provider it has to be this way. Instead I should buy the movie, and have a copy of movie and a token that shows my ownership of it. They can watermark the mkv to bind it to the token and me and copyright holders might come after me if I unlawfully share the file. But I should be able to sell my copy if I want. I should be able to borrow a copy from a digital library. I should be able to do things equivalent to a physical copy.