Complex sentence: He got the rich and powerful to invest in his schemes, he told "Dateline", by tapping into their greed, convincing them that he was one of them, paying for their lavish dinners in cash.
Split into simpler sentences: He got the rich and powerful to invest in his schemes, he told "Dateline", by tapping into their greed. He convinced them that he, too, was rich by paying for their lavish dinners in cash.