Its not that hard to believe. They probably got robbed by a lot of different groups during their tenure in the 1980s. Its a cost of doing business.Obviously in the demeo situation they were able to trace chris rosenberg back to the gambinos. Perhaps in other situations it wasnt as clear as to who specifiaclly robbed them and it may not have been worth the time and heat to get investigate and hunt people down. Im sure during when the italians were running heroin they were robbed too occasionally.