It's all about who GETS to earn, not how they do it. Paul didn't want Gotti's crew dealing because he knew Gotti could takeover and if the crew kept earning he surely would(good call on Castellano's part) plus with Gene Gotti getting caught dealing Paul had an easy excuse to kill John his likely sucessor. Another thought is what would have possibly happened if the FBI hadn't wire tapped Ruggiero's crib and forced Gotti's hand in whacking Big Paul. Castellano was about to go down for LIFE in the commission trial, he didn't stick around long enough for sentencing, however, had he I am very curious what could have played out (i.e. Attempted commission power shift by other Families) as well as what the Gambino Family in full health with Big Paul getting life would have done. Would Castellano have been allowed to run the show form the jail, it's never been an issue for guys in the past but would the 1986 Gambino Family actually keep CASTELLANO (not your average boss doing life) in place doing life with Guys like Gotti, DeCicco, Armone, Gravano, DeBernardo on the street earning what they were, honestly Paul likely would have been shelved.