As far as I know Dubai (or the UAE) doesn't have an orchestra. It'll need one if it wants to build this. Opera and classical music in general is a worldwide thing, like football so I don't think there's anything major got to do with foreign culture attached to it. It would be like saying let's not build a football stadium since football doesn't come from out culture. DUBAI, in a city of 1.5m there should more than enough people who would go to concerts. Usually there's a membership and some people go every Friday night while others go now and again.

I get the feeling somehow that it'll rip off the Sydney one though