Actually, many of the criticisms that libertarians make of government explicitly assume that government workers don't deviate in any significant way from the no

Actually, many of the criticisms that libertarians make of government explicitly assume that government workers don't deviate in any significant way from the norm. They point out that government is essentially monopolistic. If you have an enterprise that can force its customers to buy its goods then unless the people running the enterprise are perfect angels then the quality of its services will turn to crap over time. Contrast this with a competitive market where a consumer has lots of choice and service providers have incentive to provide the best quality at the lowest cost. If you have the same quality of people employed in both industries, you expect competitive enterprises to produce higher quality goods than monopolies. Libertarians would argue that a good system is one that is not designed to be run by angels.