But I doubt there are enough to fill the need for them.

I contribute to open source. I made my peace long ago with someone using what I wrote to make money. (In fact, it pleases me if they make money off of it!)

If you contribute to open source, but get mad that someone is using it without paying you, then you did not contribute in good faith. It's like those religious cults who will press a "free" book on you, and then demand a "donation".