@jihadjimmy The problem with that is that the only legal framework that allows copyleft to work is copyright.

I don't often write copyleft, as that term has no legal significance and I believe few people who read "copyleft" are aware that it's copyright, but with hacks to ensure freedom rather than to take it away - so I prefer to state that the software is copyrighted, but proprietizing it is not allowed.

If people acted semi-rationally and refused to accept proprietary malware as a substitute for software freedom, proprietary software would eventually disappear without a need for copyleft or any other similar legal framework, but of course not.