So
here's a scenario: private firefighting companies where you pay them
before they put out your fire. You could argue that multiple
firefighting companies could compete for your business and thus the
price would be driven down. So a bunch of fire trucks
would show up at your house and you haggle with them over which one is
willing to put out your fire for the lowest price. Or not. Because house
fires are somewhat rare (supply and demand) in your area there is only
one fire company and it is in the next town over. They charge a high fee
because they don't put out fires as often and must charge more to cover
overhead. If you cannot pay (probably because your reserve of silver
was in your house, which is now on fire, or you could use bitcoin except
that your computer is also currently burning) your fire just spreads to
the neighbor's house. They can pay, but the fire is only doused on
their property so they must pay extra to run the water continually until
your house burns completely (you can pay them later for the water that
accidentally splashed onto your house). Of course, even if you could
pay, you've spent too much time working out the details of the
transaction that your house burns anyway.
Also, if a Libertarian has to park on the street and pay a meter they are pissed. If they have to park in a private lot and pay a business they swell with pride.
Finally, check this out: