Yes, but what's the better alternative? The article makes the point that you're not even getting table scraps back into your GPL project. In most cases, the companies prefer a proprietary rewrite. Now you're just stuck with a less-developed project, while the world around you uses more-developed proprietary alternatives and pushes you to do the same. But I guess, that somehow makes you feel better because you don't let the corporations "feed off your work" and instead just waste everyone's time on infinite rewrites?

Yeah, I don't get that argument. "Apple is funding LLVM, therefore it is getting better than GCC!". They are only funding it because it advances their goals. The moment they get what they want they will drop it or look for ways to keep the advantage all to themselves.