Indeed, a major source of objection to a free economy is precisely that it does this task so well. It gives people what they want instead of what a p… - Milton Friedman

John Stuart Mill, The sole end for which mankind are warranted, individually or collectively, in interfering with the liberty of action of any of their number, is self protection.... [T]he only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others. His own good, either physical or moral, is not a sufficient warrant.... The only part of the conduct of any one, for which he is amenable to society, is that which concerns others. In the part which merely concerns himself, his independence is, of right, absolute. Over himself, over his own body and mind, the individual is sovereign.2

There is an invisible hand in politics that operates in the opposite direction to the invisible hand in the market.

The harm done by the FDA does not result from defects in the people in charge — unless it be a defect to be human. Many have been able and devoted civil servants. However, social, political, and economic pressures determine the behavior of the people supposedly in charge of a government agency to a far greater extent than they determine its behavior. No doubt there are exceptions, but they are rare — almost as rare as barking cats. That does not mean that effective reform is impossible. But it requires taking account of the political laws governing the behavior of government agencies, not simply berating officials for inefficiency and waste or questioning their motives and urging them to do better.