Your frustration is understandable and I agree.
I believe this is a feedback loop. The more garbage the public want, the more gets produced, it would be a reverse scenario otherwise. Also similarly, the more garbage the studios produce, the more of them people will consume, they have the power to change it. True, might hurt them for a while, but better for art in the long run.

Unfortunately, film is a mode of business for them after all. And no amount of theorizing can't overcome that fact.