and blest are those
Whose blood and judgement are so well co-medled,
That they are not a pipe for Fortune's finger
To sound what stop she please
Prices rise and fall; durable institutions endure. It's easy for some liberal arts student to write a gloomy article poetically comparing a tall building to a needle bursting the bubble.
It's harder to really understand the economic and strategic drivers behind Dubai. I certainly don't.
My hunch is that Dubai is a durable institution. Specific players, like Dubai World, may perish or be mauled. But the buildings they left behind will probably endure, with tenancy rates and rents rising and falling as Fortune plays various tunes.