Makers and open source

Yes, ok. But how do you feed Joe? That's a necessity, because in our scheme, he is the only designer and he is the one hungry - unless he stops doing open-source something he will do as soon as he starts starving to oblige Bill to give back something.
Remember, initially, I wanted to propose an explantion on why makers currently seem to give up on open source design of material products... not defend the idea for the software world which has near zero production costs...