Australians used to threaten to move to New Zealand.
After 50% of New Zealanders moved to Australia in about 1980 and spent the next 15 years sitting around in pubs complaing about the beer and badmouthing the place that was now housing them and feeding them and providing them with expensive taxpayer-funded healthcare and giving them much better-paid jobs than they ever dreamed of getting at home, Australians decided that they would be better off staying home because the Kiwis were not really very nice people after all.
New Zealand by this time was sorely missing its expatriate inteligentsia (yes, both of them) and the not-so-bright ones left at home rather foolishly proceeded with a series of major economic reforms of the Thatcherite flavour which, taken as a whole, did nothing much to help the balance of payments problem but was at least successful in raising exports: New Zealand now became a world leader in the art of exporting industry, jobs, and prosperity.
Having more-or-less completely forgotten about New Zealand by this time, Australia now took careful note of the economic chaos across the Tasman and immediately decided to bring in an economic program of its own. Designed, so far as anyone can tell, to export public assets, manufacturing industry, jobs, and any odd bits of metal ore still left lying around after the last mining boom, it succeeded beyond the wildest dreams of its authors, with the result that Australians are now just as poor as New Zealanders, we all get along together very well, and everybody is happy.
Well, sort of.