Muggers become controllable because they need territory-bound fencing and shelter.

Evidence

Why is it that this improbable sector is susceptible to organization? Partly because of the general efficiency of protection in Palermo, and partly because, since there are so many perpetrators (not least because there are so many protectors), it is not in fact out of the question that two might in fact try to snatch the same bag. In any district in the city center one can find at least ten of these characters at work. In addition, the need for a reliable fence and shelter from both police and other criminals ties muggers to a particular area, and this makes them controllable. — Diego Gambetta, The Sicilian Mafia The Business of…, 614

Categorization

• XREF: Connects to Gambetta’s own thesis that territorial rootedness is what makes criminals governable — the same dependence logic drives his protection market model. Also echoes Milgrom on how localized, repeated interaction enables control.