They're not great places to take stolen goods either, at least not generically, for anything with a serial number or distinct characteristics. Every item that get's pawned or sold in a store goes into a searchable database like LeadsOnline [0]. My family owns a number of pawn shops and we got a very low number of stolen items, the most common was someone stealing from family.

[0] https://www.leadsonline.com/main/index.php