Demand has been artificially hyped up thru easy money lending practices and speculation. Just like what happened in Japan.
Everyone I knew who were stock marketeers in the late 90's immediately ran to RE once that market crashed. I knew all I needed know about what is going on when I saw that happen.
Its like the Sopranos episode when they hyped that b.s. stock "limbistics" and all sold out right before they knew the floor would drop.
No one is saying the real estate market is sacrosanct. Nor are the stock market, bonds, etc.