Near the culmination of all great stock market bubbles, at least one of that cycle’s supposed luminaries suffers an epic collapse because of fraud. As a result, fresh capital is restricted from that sector when it is needed most, leading to further crisis and a winnowing out of the sector as competitors cannot raise additional capital. Remember; suckers are always willing to finance bad businesses, but fraud means you immediately sell. It is this fear of endemic fraud tarnishing a whole sector, not economics, that finally ends a bubble.
