They owe nothing for anything they legitimately use: that’s the consequence of open source licensing as a developer. If a developer expects a project to get a fair share of revenue from projects that use it, they are free to adopt a licensing model that dictates that. That is a perfectly reasonable licensing model.
I get it: I had an open source project that HP built a product around many years ago, but modulo a couple of patches from them, we saw nothing. Didn’t bother me: we knew when we open sourced it, anything that was done with it was out of our hands.
The best I’d expect from a company using open source is that they be good open source citizens and contribute back. Apple has. clang, WebKit, etc....
I get it: I had an open source project that HP built a product around many years ago, but modulo a couple of patches from them, we saw nothing. Didn’t bother me: we knew when we open sourced it, anything that was done with it was out of our hands.
The best I’d expect from a company using open source is that they be good open source citizens and contribute back. Apple has. clang, WebKit, etc....