[Riverdale Rink Rat]

One major concern of mine is the sustainability of these mega investments. These investments increase in value so long as there are other investors in the future who are willing to pay a premium for them. How long can this be sustained before the pool of future investors either diminishes or decide that there are better investments elsewhere?

Well, we're about to find out in the energy and commodity companies' high yield bond market. And, it looks like the answer is the usual: the investments can't be sustained almost immediately when the hot money goes elsewhere.

One of the more interesting things about the high-end RE comeuppance to come (and I guess this is more for the 'bubble' thread) will be the stories about the panic once the market goes into freefall. So, bad when it goes up, bad when it goes down, rinse, repeat.