The Hazards for Stars Who Walk AwayAll the world is toasting her, but leaving her network gig may turn out to be an act of hubris Oprah will later regret, write Lloyd Grove and Jacob Bernstein. Plus, a gallery of stars who walked away on top.Updated Jul. 14, 2017 7:54PM ET / Published Nov. 22, 2009 1:34PM ET Richard Drew / AP Photo