If Tim Clark says Emirates doesn't have the money and aren't interested which has been quoted many time, not to mention it has also been quoted from the Sheik himself.
Then I personnally would take their word for it.
That is your right if you so desire, but it is a bit like '' There will NEVER be a carbon tax under ANY Government I lead''
well not until it suits me and I change my mind.
It will happen, just a matter of when Emirates own the majority of the Flying Kangaroo.........