This is not the fault of deregulation. Over regulation caused the same thing in the Penn Central in the 1960's. You had two doomed companies merged together and then for the sake of survival they hid the truth literally maintaining three different sets of accounting books(The honest one which only CEO Alfred Saunders and CFO Bevan saw, The one for the investors that only they saw, and the one for the regulators that everyone else saw). There were differences with Enron, Two different motivations survival vs. profit, two different causes over regulation vs. deregulation, One same result, Collapse.
Haha, good lord man, surely you realize that the entire economy has collapsed due to lack of regulation in the present case, while the 1960s were the absolute pinnacle of american economic success and well being.. who the hell cared about or even noticed the fall of one company in the booming 60s?