Well, I can tell you from the EK end that we have around 32 new pilots starting each month, at the moment they all have our required levels of experience, and they have to have come from somewhere!!
The background of the new joiners is varied, from Americans coming from Major, LCC and regionals, some from Asian and African airlines, and a lot from various European carriers.
Yes, a few from R*****R, but not the flood that was initially predicted.
BTW, Emirates expansion has nothing to do with oil. Revenue TOO the Dubai government FROM Emirates is significantly greater than their oil revenues.