Very interesting!! Yes, what, really, was SATAN'S punishment?? Just a promise to bring him down later, a bruise to the head, at some future, far-off time. Meanwhile, come and go as you please (till getting kicked out of heaven centuries later...)
And then why confine Satan to the EARTH, the home of all Jehovah's wonderful creation and people, to be constantly tormented by this powerful, evil spirit being?? Oh yes, right, because God loves us so much he has to test everybody continually. -- People don't even treat their children this way, unless they're severely messed up.