That is the support system that I think is on the verge of extinction. You blame art schools for offering little more than marketing advice to young artists. Students are often mostly taught how to succeed career wise. A lot of schools do different things. The essential answer is that people desire to produce art and will find way to do it.
Artists make their way in spite of a lot, they are tremendously resilient.
The desire to respond to art is deathless. That's why people go to the big shows, the response is amazing. People are engaged. I attended a major show recently and was part of an enormous audience. Egypt, impressionists, Picasso, these are very big.