What makes it to market is already a constrained selection. It has to make it through a bunch of commercial filters (investors and publishers who'd rather do a predictably bankable franchise product over a new whole-cloth one), and then you have the issue of only hearing from those who are financially and physically stable enough to create cultural works in the first place. How many potential writers can't start their novel because they're working three jobs, or hiding for their lives in Gaza?
Copyright itself also produces a huge filter by discouraging iterative creativity. It silences people whose talent is building on or expanding existing work. See the guy who is being ordered by the courts to destroy his LOTR derivative product. Perhaps there's a chance to make better Tolkein than Tolkein himself, but we won't know for another 50 years or so.
I'd rather we tell artists "go crazy, you're guaranteed 70k per year, whether you make the next Iron Man, or something so avant-garde only six people actually get it, and four of them are just claiming they do to fit in." We'll at least get more diverse products, and let history decide what's meritorious.
