Actually, Australia is an interesting model.
The thing is, America already has socialized healthcare. Medicare/caid, SCHIP, COBRA etc are screwing the free market good and hard. In Oz, the socialist and free market systems are totally separate. Different hospitals, different doctors, everything. In reality, by divorcing the socialist and free market systems, they've powerfully demonstrated the fact that free market systems are better.
Of course they still sponge off the US by refusing to pay market price for drugs so that we end up footing the massive R&D bills.