Sometimes I have the same thought—people know what they are doing and wouldn't just fork out money on the basis of hype—and then I remember that similar stuff s

Sometimes I have the same thought—people know what they are doing and wouldn't just fork out money on the basis of hype—and then I remember that similar stuff seems to happen quite often. Even relatively recent examples – Yahoo! and Tumblr, eBay and Skype, News Corp and Myspace, even Google and Nest.