Imagine an undiscovered work by Leonardo DaVinci. Is it not art until it's discovered, so that a monetary value can be placed on it?
Will it have no value until greedy investors can sink their talons into it?
This whole idea that a work of art has to have ANY monetary value at all to qualify as art is so ridiculous that I want to cry, or shake somebody by their foundation. It's such an ugly way to see the world.

What do you tell somebody who's been a painter for twenty years, but who doesn't have the ambition to sell his/her work? Their work isn't art because there is no price tag? Give me a break.