...but some segments work best if operated by or controlled by the government.
I could not disagree more with that statement. It is true that certain functions in society must be provided by government as required by the Constitution (military, courts, etc). However, there is no segment of the economy that works "best" operated by government.
Like all monopolies or near monopolies enforced by law, government controlled segments of the economy have no impetus to innovate, no competition keep them sharp, and therefore no reason to keep costs to a minimum and no concerns about poor results. Central planning must take place where the Constitution requires it. Outside of those enumerated powers, central planning should ONLY be considered where it increases competition..."operated or controlled by the government" NEVER increases competition and for that, customers and taxpayers suffer. Just look at the out of control costs and crap results in those segments of the economy in which the government is most involved and compare those to segments where more of a free market reigns. There is no comparison.
As a last example, I can't understand how anyone could call for government control after what we learned from deregulation of the airline industry. It's so much better after the feds go out of the way. The same would be true of education, healthcare, insurance, etc.