The problem with Mr. Sowell's reasoning is exactly why the business model or a businessman will not work for government.
However, there needs to be limits on those who serve. The perks Congressmen and other high officials get are wrong. Like the one member who ran against government healthcare, but the first day in office he asked about his healthcare and got upset when he was told it did not start for 30 days.
Why do we treat these people like they just came down from the mountain.