First, governments are not businesses.  Governments do things for the public good that do not generate income directly, but help in the long run.  Education and roads are examples.  Where is the profit in a country road?  There are none.  What is the profit in educating elementary school kids? There is none.

Secondly, nothing man does is perfect. And in every system there are inefficiencies.  Comments like this pretend that businesses operate perfectly... or something.  The Wells Fargo scandals, United Airlines, Epipen and more show how false this idea is.  Businesses do not run any more efficiently than governments, except governments must continue after failures.  Think Polaroid, Kodak, Pan American Airlines.

Lastly, Econ 101 says:
Economies do better when lots of people have lots of money to spend on goods and services.
Economies do less well when money accumulates in just a few places.
The GOP policies focus on the second idea, exclusively, for decades. History shows the results.