Earlier quoted context omitted.
If use of an object requires an ongoing contractual relationship with a specific entity, you don't own it. I know that people here won't be super surprised by this concept, but I still think it's worth getting the wording right. Just as with music and videos and games, I think one should be disallowed from calling something "selling", "buying" or "owning" if what's really being done is "licensing". Yeah, I'm from the…
I once read that the test of whether or not you own something is, "Can you sell it?" In this vein, movies and TV shows you "buy" from Apple, Amazon, etc. are not yours.
The movies and TV on streaming services are not yours because you don't control them and they can be removed at any time. Market salability is another question entirely. There are items you can own you might be prohibited from selling on an open market, such as a landmark property or a particularly destructive weapon.