Well then what do we do? Just give up and walk away because abject poverty is the world median condition? Let's just offshore every damned thing then we can all concentrate on selling real estate to each other!
Every single job that can be done without actually physically being here will disappear, and the airline jobs can be performed by people from low tax base countries who fly in and out.
Who is going to be left paying taxes here? I am going to need more than a few hairdressers to keep me in Centrelink riches.