And speaking of closing; just look at Android with its complete anti-GPL, purged system. Only Linux remains there.
Of course, I (or you) can’t prove anything either way, but I have the feeling of Google, Apple, and the rest of the permissive license promulgators all the time going “Relax, it’s fine now, the war is over, you can all go home! You won!” And if we turn our backs, if we relax in our supposed victory, we will slowly find that all the contributors to these better (completely coincidentally non-GPL) projects are mostly employees of these same companies, and they all have CLAs. And one fine day they will turn off the freedom and turn it all proprietary. We then cannot hope of competing with the current project owners, since they have all the experience and infrastructure.