The dot com boom and bust were driven by a lack of understanding of the greater fool theory. People, for many reasons including 2008-9, MF Global, PfG Best, R

The dot com boom and bust were driven by a lack of understanding of the greater fool theory. People, for many reasons including 2008-9, MF Global, PfG Best, R Allen Stanford, Madoff, CFTC, TBTF, flash crash, TVIX, decided the investment environment is too toxic to play in.