This is about organized retail bulk theft. Punishing the individual shoplifters is useful. But it's also useful to crack down on secondary markets through which (mostly) stolen goods are shifted.
We haven't banned pawn shops, either. But we do understand that they are a conduit for theft and can induce other crime, and so we tend to impose a certain amount of regulation upon them to reduce the scope of the harm.
What exact form that would take is up for discussion.
And, of course, there's other secondary markets-- sketchy people with tables illegally selling gray market consumer goods.