Movies can flop big time. funding a movie is a risky investment. There's no guarantee that a broader audience will care for what you consider a brilliant movie. I assume it's a hit or miss game.
The last decade was the decade of superhero blockbusters. The mainstream industry has become rather formulaic, but it works. There will be a point where superhero movies, like their comic book counterparts, become so over-the-top ridiculous no one can relate anymore, leading to a cinematic renaissance.
... or they just start over telling the same stories with different actors.
