Forfeiture of copyright would mean it becomes public domain and there are no longer any restrictions on distribution/modification. If you mean transfer of copy

Forfeiture of copyright would mean it becomes public domain and there are no longer any restrictions on distribution/modification. If you mean transfer of copyright to an organisation aiming to maximise software freedom for end-users, then Software Freedom Conservancy is willing to receive copyrights and enforce the GPL and other code licenses. Probably the FSF is willing to do that too. https://sfconservancy.org/copyleft-compliance/ https://sfconservancy.org/copyleft-compliance/