"The problem with using a permissive license such as Apache is, anyone can fork the project exclusively under xGPLv3. If that fork becomes more popular, there's

"The problem with using a permissive license such as Apache is, anyone can fork the project exclusively under xGPLv3. If that fork becomes more popular, there's no way for the Apache-licensed upstream to merge any patches from the xGPLv3d fork back in." If the GPL fork becomes more popular then one of the main arguments for not having a GPL license falls apart.