I am not sure what he means by "successful billionaire", but he has never invented anything or performed a unique service which changed the way people live their lives. To me, that is what makes a super wealthy person successful. He inherited his biggest business from his father and he has built everything around that. An inordinate number of his business ventures have failed either because he's a poor businessman or they weren't real businesses or both. His main skill seems to be making deals by bullying and manipulating people. That certainly wouldn't make him unique among billionaires, but I don't think it makes him successful among billonaires either.