Both India and China have booming economies with rising numbers of middle class people (many of whom have never flown before). I think I read that several billion people live within 5 hours of Dubai (maybe not the exact number - but close).
People from China will never fly the wrong way back to Dubai then travel to the US. I don't dispute the numbers of people but these 2 billion people will never be able to fly and fill 120 A-380s. The entire North Anerican market constitutes 50% of all Air traffic. The location of Dubai does not fit for air traffic to/from the N. American markets and most European markets. Take a look at Dubai on the map and then think about East coast traffic to Europe or west coast traffic to Asia. Dubai doesn't fit this and 50% of all air traffic is N. American air travelers. I don't think most N. American countries will sign open sky agreements with Dubai or approve fifth freedom rights or beyond.
Think about the other airlines that offer the same quality of service offering a more convenient route? There are not that many choices with one connection. Other airlines may require two connections or more and with international flights, clearing customs, etc in every country that can add 3-4 hours per connection time. That amounts to way time total enroute than emirates one stop going the long way around the globe. I still want to know how you think you know so much about Emirates' model and how full there 380's are or are you just speculating based on your minds one sided thought process? Not a bad thing, most people think that way, just curious.