The U.S. government also spends more on healthcare per capita than Canada [1]. Seems pretty socialized to me already. The U.S. government is a corrupt piece of shit. Passing laws mandating health insurance for everyone isn't going to fix things.
[1] http://www.slate.com/blogs/moneybox/2013/01/23/chart_us_gove...
EDIT::
Furthermore, diseconomies of scale are not just Austrian Economics voodoo.[2]