We could weather a $400 hit. I would not like it, but we could manage.
Seriously though, there are no tent cities in Australia anywhere like there are in the moderately sized American cities. I guess that's proof to some of how awesome the economy is, but I find it a bit retarded to talk about all the benefits of pauperism.
The USA has a much larger non-anglo, non-northeast asian population. If the USA was just 5% non-asian minority like Australia, we'd likely have similar poverty/shanty-townage.
The greater "diversity" of the USA also erodes social trust and social capital, making folk less willing to cough up their cash to support that stranger with his strange ways on the other side of town.
Social welfare also is less & less effective/efficient, the more diverse a society. SO, more gets spent, but less gets done.
Socialism only has a barest chance of success in a high-trust monoculture where the population has better than average impulse control and longer than average time horizons.