The difference is that if I do something for you because you pay me handsomely for it I'm gone the moment you can't afford me.
I want the government to be a robust platform on which people can build the jungle of commerce.
Making widgets is hard. One can buy a truck to truck the widgets to the customer but the entrepreneur shouldn't also have to build roads. If we involve him in building roads it will mean fewer widgets of lesser quality. The whole widget manufacturing might not even make sense anymore.