Even if you could coax these men out of their jungle lairs and get them to the negotiating table, there is very little to offer them. (snip) All they want is cash, guns, and a license to rampage. And they've already got all three. How do you negotiate with that?
The author scarcely mentions the influence of tribalism which also plays a role here. The behavior described sounds like it comes from X rated versions of the Mad Max movies. This is bad business.