As mass production has to be accompanied by mass consumption, mass consumption, in turn, implies a distribution of wealth ... to provide men with buying power. ... Instead of achieving that kind of distribution, a giant suction pump had by 1929-30 drawn into a few hands an increasing portion of currently produced wealth. ... The other fellows could stay in the game only by borrowing. When their credit ran out, the game stopped.
Marriner Stoddard Eccles