Amazon Inc. may be the one that got away from legendary investor Warren Buffett--at least for now. The Oracle of Omaha said Amazon's shares "always looked expensive," and that he underestimated the ecommerce and cloud-computing behemoth--which boasts a market value of $446 billion, second only to Apple Inc. at $781 billion--potential dominance. Amazon CEO Jeff Bezos is the world's third richest man, behind Microsoft Corp. founder and Buffett chum Bill Gates and Spanish billionaire Amancio Orega, according to Bloomberg's index of the wealthiest people in the world. On Saturday, during Berkshire Hathaway Inc.'s annual shareholder meeting, Buffett...