It's not conjecture, you can see the minions of certain rich people talking about it. Of course these people aren't afraid of police. They have top police protection as well as private armed security. There are many ways to make money from destabilization of cities or countries. For example, you could play real estate in "distressed" areas, bet against businesses that can't possibly stay open in the face of crime, and also fund politicians that claim to have a solution to the problem you are creating.