It isn't the expense; it is the segregation. The poor just aren't allowed to exist or mingle with the rich in Dubai. If you are poor, you are only near the rich while you are at work, performing a job.
What do you mean by that? It's the same kind of segregation that exists in San Francisco: expensive areas are out of reach to those without money. There aren't actual laws enforcing segregation. In fact, it's almost the opposite - it's pretty easy to come and live in Dubai.
