Concerns about making money are not going to destroy art. Almost all art through history has been made by people trying to make a living, not trying to express for its own sake.

We don't have a thousand years of portraiture of the elite because artists were just absolutely convinced that was the ultimate expression of the medium.

The lack of discoverability and gatekeeping (to some extent) ensures that unpromoted art will not be known. When did the last non-supported musician hit it big? Artist support and development is important as well.

You should say mainstream art in any era.