No, that's exactly my point, Apache is _not_ a copyleft license. Under the GPL, you cannot change the license in a subsequent version. You must continue to lic

No, that's exactly my point, Apache is _not_ a copyleft license. Under the GPL, you cannot change the license in a subsequent version. You must continue to license any derivative works, including subsequent versions, under the GPL. If someone wants to ensure that the projects they're contributing to remain open-source, they should limit their contributions to GPL projects! The Apache license does not require you to license derivative works under the same license. This is why people have strong opinions about different licenses, because some of them provide stronger guarantees than others. If someone ignored these "details" and is now disappointed that they didn't understand what it meant, I don't think that's anyone's fault but their own.