But this is actually not what happens and for the most part democratic governments that do provide health care are the ones with the best health outcomes worldwide, so what point are you trying to make?
My point is that governments should focus on national security and integrity of elections and law. Every dollar spent on healthcare is a dollar that cannot be used to enhance the nations' defense or legal systems. It also raises the cost of government b/c of the necessary added bureaucracy.
Let private businesses sell insurance. Let people buy what insurance they desire.
How do you define failure? When did "again and again" occur? I don't see that you have any valid argument or any supporting data whatsoever. Private health insurance exists and works.
Insurance doesn't have to cover everything: any aspect of coverage is debatable since it is a contract between buyer and seller with the courts as the deciding powers when either buyer or seller believes the contract has been violated.
Let private businesses sell insurance. Let people buy what insurance they desire.