Artists get paid so little on the middle to the bottom of the pile because Any asshole can say he's an artist. A degree means dick unless you're going to go into Arts Administration and, even then, grad school isn't about what you learn but who you impress and befriend. If everyone who felt a need to help his fellow man could simply declare that he was a doctor could be, in fact, a doctor, then being a doctor would have very little employable value.