The US makes it by size and having really dumb consumers who will spend until they live in cardboard boxes. We are in the middle of an upheaval, though, because a giant part of our economic system revolved around automobiles, and that market is going through a structural change with foreign competition and rising energy prices. 20 years ago, the US had about 500,000 people employed (at pretty high wages) directly by auto manufacturers, and probably about another 2,000,000 to 5,000,000 people employed in supporting businesses - steel, suppliers, contractors, dealers, etc. And, there were probably at least that many people on pensions.
Now, the steel companies are all gone, save two or three. Suppliers are dropping like flies - Delphi is the latest and largest. Retirees are seeing their pensions disappear as the companies that back them go bankrupt or negotiate sharp reductions.