But what Mr Sterling has failed to see and even point out is that art is a cyclical thing like fashion. If it wasn't, we'd all still be painting Renaissance artworks. (Though given the quality of today's modern art, this may be something of an improvement - but this is moot.)
But art, like fashion goes through the motions like anything else until it's buyers or connoisseurs get sick of it and then the art changes to reflect the tastes of the future.
Even renaissance art such as the Sistine Chapel were done on a commissionary basis. Not because it was art for it's own sake - but because the church paid Michaelangelo to do it.
Art for it's own sake is a rare beast, the rest of it is art for money's sake.
I can understand why Mr Sterling fears stagnation in art but it doesn't give him the right to act immaturely toward those who disagree with his own artistic opinions.
If someone considers a can of soup, Victoria Frances pictures, abject sculptures covered in verdigree to be art, it's art - albeit to them. Acting like a petulant child will do nothing to change this.
This raises the following question: Why does Mr Sterling not respect other people's right to buy something they deem to be art? Especially when it doesn't harm or otherwise affect him.