The queen of daytime television left one of the highest-rated programs in history last year to significantly expand her portfolio with the launch of a cable network, OWN. Winfrey, 58, leveraged her celebrity to create a business empire spanning one of the most successful magazines in the world, movies, and television.
Great ideas are hard to come by. Putting them to work is even harder. Meet the founders who turned concepts into companies and changed the face of business.
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