This is bullshit. There's a who's-who of A-list investors who put their money into a 17-year-old's company. The kind of people who didn't get rich by putting their money into the hands of a 17-year-old. They knew something you didn't. And that something is quite probably that somebody at Yahoo! had the authority to invest a large amount of money and make a lot of people wealthier in the process.
By Occam's razor, the most likely explanation is simple corruption.