Gave this in-line response to someone:

"You see the same idea in people who
really, truly believe that schools, roads, water rights, security,
emergency medical services HAVE to be government run, that it is
impossible for these things to be taken care of privately.  The irony is
that, when you can compare a government-run program to a privately run
program in the same field, the private one makes more money while
offering cheaper and more efficient service."

One, this is true in some cases but it is often misleading because it does not compare like with like.  For instance in education private schools do much better, but they do better because they are exclusive and take only the best students.  If they had to take the students from bad homes with criminal records, emotional problems, learning disabilities, poor grades etc, etc they would do more or less as well as the public schools.  And there is also the matter of access to their services - not nearly every parent could pay out of pocket for their kids to go to school, so either we let only some kids learn to read, write and do math and slide into a nation of illiteracy and permanent poverty, or we use tax dollars to (one way or the other) fund education.  Unless you know a business which has every single american as a customer.   Businesses are good at many things, but they can't provide any service continually and universally to everyone and they can't do things that are not profitable, like providing insurance to seniors and disabled people who have the highest medical costs.  Or delivering mail to some bum fuck town with 20 people in it where there isn't enough business to justify a route.  Or defend a nation from an invasion, or feed the poor, or any of a thousand things.

"Even more irony, it's
always the really important stuff that gets relegated to what everyone
knows is an inefficient and incompetent system, staffed by mostly
morons. Honestly, I don't want the people who mess up my driver's
license to be handling my medical records."

Yes, there are no morons in the private sector.  You get the wrong form at the DMV just like you get the wrong order at mcdonalds.  It's the same world with the same people, it's not like public servants are from another planet.  And as far as efficiency, the administrative cost of the food stamp program is 3% of the budget.  Beat that in the private sector.  Show me a bank with that kind of overhead.

"My answer is pretty
obvious, so let me try arguing the opposite way...Businesses exist
because of the government... hm. Okay, I've got it. The businesses that
made America's economy something awesome to behold exist because of our
government, founded on freedoms. We can see by looking at other parts of
the world that our type of government, based on rights of the
individual and limited federal power, is the form most conducive to
thriving businesses and economic growth. With a different, more
restrictive form of government, these businesses might very well not
exist."

Such as what?  Businesses without restrictions are called monopolies.  Banks without restrictions are called loan sharks. 

"That's not what Obama was saying. But you know what? If a
businessman needed a road, he would damn well build one himself. That
has actually happened, and does happen, so I don't really get what their
point is when they yammer on about the roads."

Yes, a pizza place can afford to build roads to everybody's house they deliver to.