Both sides fail to understand the reasons for the other's successes. We have to get past that, and a good way to start is by getting clear about what some of these distinctions really mean. Without that clarity, we see gray as black or white. Many Linux distributions are chock full of stuff that's both closed and proprietary. We see gray as white.
Good guys wear white hats and sell white code.
But that's not always the case. We're talking about copyrighted, patented stuff. Proprietary and closed as can be. The distributions can't open source the RSA code. And it's all over the place.