@Daojoan and like 10 years working on Wall Street at an investment bank, if am not mis-remebering.

also, isn't another reason for his success that he was at the forefront of tapping investment "dark pools"? he started the trend of running businesses that supposedly didn't make money for more than the "3 years of no profit and you fold" they taught people at business school. Amazon didn't show a profit for like a decade.