These are all good arguments. It is just more fascinating to me when a Mafia figure contains his murderous tendencies and/or has a conscience like "normal" people. A figure like Gambino shows that certain figures may not really be all that different.

Insofar as the RICO argument, I think that was very insightful. I have written extensively on RICO and believe that it did serve as a massive deterrent leading to the need to quiet witnesses far more often then when Gambino was in his heydey. Still, perhaps if Casso were more careful and resolved his disputes in a different manner, murdering those who carried out the initial orders would not have been as necessary.