Artists express themselves through their work primarily because of an uncanny need to do so. Not because others are going to pay of it. Most likely people are going to shit on it, which is exactly what happened to Yorgos Lanthimos (hottest filmmaker Hollywood at the moment) until his works reached a wider audience outside Greece, his home country. Wasn't about money. To this day he works only with studios that will allow him 100% "final cut" control.

Are there "frauds" out there? Sure, is it always clear which one is which, no. But at it's core art is the most well established form expression, other than talking, known to man kind since _forever_.