Open source devs are allowed to learn from proprietary source code, including Windows' decompiled binaries, if they so choose. The fact that ReactOS and Wine ha

Open source devs are allowed to learn from proprietary source code, including Windows' decompiled binaries, if they so choose. The fact that ReactOS and Wine have chosen to essentially self-sabotage by adopting a "clean-room" blackbox policy does not mean other projects must do so. Those policies are self-inflicted wunds, not mandated by any legal cases or standards.