"According to the World Health Organization, in the United States administrative expenses eat up about 15 percent of the money paid in premiums to private health insurance companies, but only 4 percent of the budgets of public insurance programs, which consist mainly of Medicare and Medicaid."
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Private insurance is less efficient than public insurance. Competition in insurance has _no_ benefit and is actually detrimental to the health of a nation.
Here is the part about private companies that gets my goat: insurers make more money by working to deny people healthcare.