I disagree. Casso was a psychotic killer who didn't follow the rules, other example is Nick Scarfo. They both started killing their most loyal captains and soldiers without a reason. Let's take Al D'Arco, he was in the mob all his life, and even though... he betrayed it, because this is not Cosa Nostra, that was paranoid psychotic killing that Casso did. Same with Nicky Scarfo, when Leonetti left him, after the killing of his most loyal - Salvie Testa. John Gotti on the other hand was constantly complaining, even from the businesses that Gravano made, and that were profitable for Gotti too. He was always on the spotlights, on the cameras, things that are not right. Yeah Casso, Scarfo and Gotti were gangsters (not racketeers like Castellano or Bruno), but these are the 3 bosses that broke almost every single rule. But their soldiers, underbosses - Leonetti, Gravano, D'Arco do know that this is not what they gave their blood to. So they are out and the psychopaths are in jail, or dead. Leonetti is out of the life, Gravano will never be out of crime because this is what he is born for, Al D'Arco is also out.