That’s a problem though because the movie isn’t in a piece of original work. It’s based on the book by the same title by Isaac Asimov. I assume it’s out of copy right now not really sure.

Anyway the point is neither the movie nor anything Elon Musk may or may not have done is the original work and since the original work has been replicated many times it’s fairly obvious no one owns the copyright. Much like how no one owns the copyright to the tripods in war of the worlds anymore which is why there’s been so many adaptations over the years.