Libertarianism is a fabulous concept, but I'll readily admit it's not realistic. It would be if all humans and corporations were benevolent, but that is simply not the case. In a utopia, maybe, but not on this planet Earth. Someone needs to keep things in control.
So I agree, whatever the form of society and politics, there's always need for a government.
RE: Response: Sorry Libertarian Anarchists, Capitalism Requires Government