Sure, but even looking at the most corrupt, they have little incentive to enable fraud, crime, and tax evasion by people they're not already in mutually benefic

Sure, but even looking at the most corrupt, they have little incentive to enable fraud, crime, and tax evasion by people they're not already in mutually beneficial arrangements with, and none to enable it for people who won't give them a cut. Do you want to give them a cut?