I personaly do not believe that some of those guys were ever betrayed, mainly because all of them made mistakes which destabilized the cash flow, made secret deals, or brought other members of the organization in danger. None of the bosses ever liked secrets or lies and on top of that, none of those guys were innocent. Most of them were pure obstacles and in the eyes of the gangsters, these things meant nothing more than simple business activities. Plus we cannot talk about betrayal in an organization which deals with corruption and murder, obviously beacuse its an everyday thing