I dislike copyleft, but once you decided to go for copyleft, I think a clause like this makes a lot of sense. Copyleft licenses are inherently trying to coerce

I dislike copyleft, but once you decided to go for copyleft, I think a clause like this makes a lot of sense. Copyleft licenses are inherently trying to coerce the world to be a certain way. A penalty clause like this is probably more effective at changing the world than the normal clauses.