You forgot the slaves that built America? You need cheap labour to build a city so quick. It's as simple as that.
Unlike the slave trade back then the immigrants in Dubai have a choice in working in Dubai or living in extreme poverty back home (mainly India).
did you not watch the video? these companies are preying on the desperate. promising work and pay, and when the workers arrive, they are stripped of their passports until the contract is over, so they couldn't flee if they wanted to. and they wouldn't have come there from halfway around the world if opportunities existed where they were from.
then they are only payed at best half of what they are promised. and forced to live in deplorable conditions. they are brought there under false pretenses and stranded there, and are only paid enough to cover the debt that they a.ssumed to get them there in the first place, with nothing to show for themselves or send back to their families, per their origional intentions. and while there is apparently no direct evidence, it's implied that the "govt" of dubai is complicit with these companies.
meanwhile the rest of the country and its visitors portray this image of deplorable decadence
so before you go ahead with all that "yo i know its harsh but blah blah" sh*t imagine, for a second, trading places with one of those guys
i remember when the story about that place broke a couple years ago, ever since that point, i, too, have said