How? It's a nice little earner for Fox. Why on Earth would they sell it? And they're never going to allow it to become public domain.
Quotei.e star wars clone wars coming out on W.B instead of FOX..
Lucasfilm owns Star Wars; not Fox. Lucas sacrificed part of his directors salary on the first film for sequel and merch rights. Then used the profits to finance the other films. He is effectively an independent filmmaker. Pretty sure he effectively owns Indiana Jones too - Fox, Paramount, Warners, whoever - just distribute the films.