Already the after-effects of these excesses in Asia and elsewhere have depressed commodity prices and threaten a cascade of rural bankruptcies among farmers, and their suppliers. Crop prices are going from bad to worse and the agricultural economy in the U.S. faces a disaster or another government bailout. Oil prices at current levels threaten the stability of whole regions, including the Mideast, Russia, Venezuela, Mexico, and Indonesia. The mining industry is a dead man walking and the export business faces rapidly shrinking demand. Meanwhile in a mad race to keep above water, the world is dumping it's products on our shores extinguishing the profits of American producers who cannot compete with desperate foreigners.
Corporate profits slide downward and the economy begins to falter.
It's the nature of things that booms turn into busts. It's always been that way. The crash of 1929 followed a boom. Since the second war we've had numerous recessions that followed boom periods. That's because in a fiat money and credit system the economy gets ahead of itself.