Comment by kelnos

> IMO a private corporation taking the source to make a commercial project and refusing to give anything back (whether patches, money, or otherwise) is abusing.

I don't agree. Releasing under a permissive license is explicitly saying "dDo what you want with this, including using it commercially without giving back". And if you're saying that, you can't cry "abuse" when someone does exactly what you told them they could do. Because that's what you've done: the license terms explicitly say that.

"Legal" has nothing to do with it; if you want other people to have to contribute their changes publicly, you use a copyleft license. If you don't care, you use a permissive license, and then there's no such thing as "abuse", as long as people follow the letter of the license.