One person could buy a million ‘new’ units of a movie and continuously rent them out (via short term repurchase agreements) on demand to make something resembling a streaming site.
> Borrow and enjoy audiobooks, eBooks, comics, movies, TV, magazines, or music everywhere you have a screen-your computer, your phone, your car, even your TV. All you need is a library card.
Also, Libby [1]
Lending them without cost, like a library, I don't think they could stop you. But commercially renting out the physical media wasn't an automatic right, as far as I know.