I justify markets in everything. Markets in everything requires natural law, and natural law requires aristocracy.
Aristocracy like violence is neither good nor bad. It is the ends that aristocracy and violence are put to that determine good or bad. As such, advocacy of markets (reciprocity/cooperation/non-aggression) merely requires aristocracy as a cost (Input).
I remain a ‘libertarian’ in the sense that I desire liberty and freedom even if I can only obtain it through purchasing sovereignty with the promise of violence.
But it is a condition of sovereignty for the aristocracy, liberty for the upper, freedom for the middle and working, and subsidy for the dependent classes that I am seeking to justify. And I can find no other political argument that survives tests of scale (time).