Since anarchism cannot withstand rational criticism, Rothbard went from promoting von Mises to plagiarizing Rand to be irrelevant as Anarchist. The main mistake of Rothbardians is to treat non-agression principle as the cognitive tool without a context. Thus, it becomes self-serving tool detached from reality. Reality cannot be caged into a simple slogan. Principles without context become shallow dogmas. Yes, those who do not advocate anarchism DO face a problem how to finance a small government. That is for new clever men to come up with the best approach. But for now, 10% flat tax & balanced budget will be a big leap for capitalism, freedom and prosperity rather than idle talk for ideological purity.