Stephen Lovekin/Getty Billionaire music and movie producer David Geffen is the richest man in the entertainment industry. He’s worth an estimated $8.49 billion, according to Bloomberg’s Billionaires Index. Geffen founded music label Geffen Records, which he sold in 1990 for $550 million. He also cofounded movie studio DreamWorks SKG with Steven Spielberg and Jeffrey Katzenberg. […]