The primary Stallman’s output is neither technical nor legal but moral. He condemns any entity that doesn’t grant its users four “freedoms.” And the primary disease that GPL spreads is not arbitrary legal restrictions but the moral code (altruism) that sanctions it. The fact that it’s not meant to be forced upon developers is irrelevant: it preserves the philosophy that could be weaponized in the future, possibly in an altered form.

But yeah, altruism is typically shared by both anarchists and communists. The only remaining question seems to be: who better embodies the ideal?