This new money [inflation] is never evenly distributed, but instead gets funneled into whatever narrow area happens to capture the public’s fascination. As prices and valuations soar, greater doses of credit are required to keep the game going. Either more marginal borrowers are drawn in at ever more precarious levels or greater leverage must be applied to existing borrowers. This is what ultimately doomed the housing bubble. In the end, nearly anyone who could fog a mirror was getting an invitation to join the party.
The trouble with pyramid schemes is that they’re not designed to go in reverse. Eventually, the number of willing dupes is exhausted. The same people who panicked late to get into the game are just as likely to panic when the music stops. The longer the music plays, the more leveraged and unstable the inverted credit pyramid becomes. As the late economist Hyman Minsky observed, "stability is unstable."
~ Kevin Duffy, Bearing Asset Management, "It's a Mad, Mad, Mad, Mad World," May 22, 2007