If I were a clever CEO of EK, Singa, etihadit, and even Guitar, I would be looking at poaching the Q drivers.
Think about it, all it would take is being based at their original port, eg mel, syd, bne, offer them more coin and more days off, and hope to steal 70% of the A380, A330 and 747 drivers and you would shut Q down with in a couple of months. I am sure that a dead rat would mean massive increase in freq for these airlines so the work would be there for the new recruits if they pulled it off.
I would guess the money spent on poaching the drivers would be money well spent if your competition collapsed. How many A380 drivers would it take to stuff them up?