Buddy, I hear you, but if a man is turned into a mad-dog killer by the abuse of his childhood and his environment, we still can't let him run around loose with the rest of us, whatever our feelings about the matter may be.
The elite-y types that get turned into cabal stooges may be victims as well as victimizers, but if we can't let them run around loose with the rest of us on account of them being untrustworthy psychopaths, it's kind of the same thing.
Now ask yourself, even if Vengeance is the Lord's, what are we supposed to do with them? Is taking a rich person, taking away all their shit, and locking them up for life a greater kindness than putting them out of all our miseries? Riddle me that.