It's all connected. First of all our innovation is a product of the private sector and the corporations that get private moneys through the stock-market investors, not the government's money, but some extra monies are invested through tax deductions and tax credits... this acts like stimulus money from the government only because the government calls it "cooperate welfare," just like what the oil industry gets... tax breaks are more apropos in describing the government's function here. None of this has anything to do with the single payer system unless you confuse the tax system/codes, and how it relates to research and development in our free-market society. No one knows exactly how the ACA will affect our innovation, but the taxation of medical devices will create an unfortunate consequence that the foreign countries can seize upon. It's makes it far more expensive to innovate medical devises here in the U.S.A.. Taxes act like a drain on research and development. This kills all American innovation in medical devises in the end.