Occupation: Chairman, president and CEO, Amazon.com
The man who got his start selling books on the Internet continues to reinvent Amazon at a rapid clip, keeping it at the forefront of new technology trends. Other than Apple, it's the only company that has assembled a comprehensive marketplace for digital content: e-books, streaming video, digital music and apps. That's a big reason its $200 Kindle Fire tablet, unveiled by Bezos with Apple-esque hoopla in September 2011, is the most formidable iPad alternative to date.
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