We've been using the same archetypes for stories for millenia. Certain stories just work, and people love them, so we take that story, give it a new shell, and sell it to the people.
Movies aren't different, but they tend to take the archetype of a story in a new shell idea literally and just remake the big blockbusters from yesteryear, and sequels.
But although hollywood is pretty much empty on the idea fuel tank, there are people out there who write nifty little things called "books" and they tend to have some cool ideas. So when hollywood runs out of its own ideas, never fear! There are other sources!