Hm. In general, billions more dollars have been sunk into overall marketing strategies since the 80s and 90s... relatively speaking, a lot of money even if old values were caught up to new ones. So I don't discount the value in that, either...
From my perspective, the real argument suggested here is that the weapon ban is hard to enforce - ie trying to determine restriction by the features of the gun is problematic. Not that the idea of restrictions are unsound, just not by these methods