I think the multi-license model does work with RMS's views, it's just that you have to make sure that you're selling the same software; the GPL version cannot b

I think the multi-license model does work with RMS's views, it's just that you have to make sure that you're selling the same software; the GPL version cannot be limited or treated as trial software. Using a proprietary license for businesses means that you can punish them for refusing to use GPL'd software by making them pay more. When they accept the GPL, then you reward them with a lower price (but not free, you can charge for GPL software too ;-) ) hopefully encouraging more GPL'd software to be released into the world. The point is to reduce how much proprietary software there is and increase how much free software there is and multi-licensing uses a carrot and a stick based on pricing to do that.