They must dream that somewhere there is a vast pool of type rated and current pilots waiting to board a flight to Australia. That is not the case.
This is precisely the problem, they have until most recently been fortunate to have effectively unlimited supply. Not a thought was spared for the day the well ran dry. Airlines coincidentally reaped
substantial cost reduction on input prices by outsourcing, Globalisaiton effectively removed barriers to this process and airlines benefited handsomely, by-passing any protections afforded employees in their home markets and sought labour at lower unit cost elsewhere.
Unfortunately some airlines are a bit slow to realise that globalised supply chain works both ways and indeed labour has the ability to relocate.
There is a market clearing price which airlines in Australia will be loathe to match, whilst this occurs a shortage will persist.