The point is they are avoiding so much tax that it is practically the tax payer that is funding not only their mining but the cost of the labour for the mining. And yet, they still want to import cheap labour as well - what is with that, totally unnecessary.
I think it takes some real guts for a government to stand up and say enough to Global Corporate Greed and the end result could well be they leave.
But the resources are still there, the demand for the resources is still there and the labour force that needs work is still there. Along with the entrepeneurs capable of making use of them, because the opportunity to make a sensible and fair profit is still there - maybe it's time some of the more socially moral small businesses filled the vacuum of these greedy giants.