Let's say you've got a factory that makes dung-flavored soda.
You can change the CEO and the board of directors as much as you want, but you've still got a factory that produces dung soda nobody wants. The government is like that-no matter who is in charge, it's producing things nobody wants to buy on the free market and using up resources that would be used better elsewhere.
Except the government isn't a private company organized to sell inexpensive consumables solely for the profit of its shareholders. In fact the government doesn't "sell" anything and thinking of the relationship between citizen and government as buyer and seller leads to a whole host of wayward thinking about how the government should be run.