"Serious arts establishment"???? It doesn't exist in the USA. Vulgar "avant garde" mediocrity is piled end on end, and the Blue states (especially New York and California) have seen to that.
First, since the WPA was formed during the depression, the left has always had an opinion that anybody who really wanted to could be an artist. As a result way too many talentless artists have appeared on the scene trying to find money from the government. In California alone there were over 15,000 folks calling themselves artists before 1950. Problem is, less than 1% of these so called artists are seriously traded in the marketplace.
Second,when really gifted young artists show up at these academies they are told they must "express themselves" rather than learn the basics of what art is all about. As a result we get pseudo sophisticate abstractionists who can talk a good game but make nothing but s**t.
Third, the real dealers want to sell what the public will buy. Funny how that works. As a result we have to look at 100 portfolios to find one good one.
Finally, modernism and abstraction must needs be supported by a basis of serious training. Art that performs in the market is always collectible as market is determined by open and free trading. Serious artists are welcome to come here to see what nature made before they try to make it themselves. Retreats are free.