I am tired of hearing people insist that the Fed can expand credit all it wants. Sometimes an analogy clarifies a subject, so let's try one.
It may sound crazy, but suppose the government were to decide that the health of the nation depends upon producing Jaguar automobiles and providing them to as many people as possible. To facilitate that goal, it begins operating Jaguar plants all over the country, subsidizing production with tax money. To everyone's delight, it offers these luxury cars for sale at 50 percent off the old price. People flock to the showrooms and buy. Later, sales slow down, so the government cuts the price in half again. More people rush in and buy.
Sales again slow, so it lowers the price to $900 each. People return to the stores to buy two or three, or half a dozen. Why not? Look how cheap they are! Buyers give Jaguars to their kids and park an extra one on the lawn.
Finally, the country is awash in Jaguars. Alas, sales slow again, and the government panics.