That's my observations as well. I'd add that people share derivative work not only because they like it, but because it makes sense: upstream means much less ma

That's my observations as well. I'd add that people share derivative work not only because they like it, but because it makes sense: upstream means much less maintenance and infrastructure work, many more opportunities for improvements. I believe in FOSS so much that I'm confident anyone smart enough will end up using it and contributing to it to some level. It might take a lot of time, but it'll happen. Companies not doing FOSS have a competing disadvantage in the long run. Sure, not everything will be contributed back. And so what? It wouldn't have been anyway if the license terms had discouraged the use of FOSS in the first place. What matters to me it that /more/ is being contributed back. Short version: part of much more > everything of much less. So, I'm very fine with any non-FOSS reuse of FOSS projects. It directly increases the likehood of improvements to these projects and indirectly increases the likehood of improvements of FOSS in general, by making it more and more relevant in still-non-FOSS environments (the long tail of small FOSS projects is what makes it ubiquitous). Just don't ask me to use non-FOSS derivatives :)