haha, i do remember that, i don't know exactly how it worked though.
but what i meant was, there was never any standard way for software to install, so standards varied. there were applications you could copy to anywhere you liked, just as you mention you could do on the Mac. And there were other applications you couldn't move at all without a lot of hassle. Or sometimes you couldn't even install them at all if you didn't call your install drive DH1: or whatever.