One of the arguments often heard about libertarians and living in a libertarian/anarchist society is that we need the government to do things like build the roads.
Here is an example of a government-built road.
Seems to me that the private sector could probably build a better road than this.
But who would build these roads if the government no longer built them? Well, considering roads are fairly necessary, I would say whoever had the desire and competence to build them. The next question that might be asked is who would pay for them? My answer would be whoever wants the roads to be built and maintained.