Think about art yourself. Try some experiments. Tell people you're an artist. See how often the conversation turns to how much money you make. The open source message is all about money, by the way, paid versus unpaid programmers, and in that sense it diflects us from where the most good can be done.
Open source is a tactic.
It's a zig to the commercial industry's zag. It can gain a market presence. But it's not right in every situation, far from it, nor can you make the world revolve around free source. It certainly has a place. But in itself it is not the revolution.