A great point from Hoppe's 'Theory of Socialism and Capitalism':

A state cannot hope to lengthen its subjugation and thievery if it tries to dip into all the production arenas of an economy. That would mean eventual rebellion or gradual decline of the economy it depends on for its parasitic survival. Thus, it has to, as a necessity, pick and choose carefully the endeavours that will extend its lifespan.

Which is why the states that define 'strategic sectors' and stick to regulating, monopolising, capturing and expropriating those alone have a higher chance of survival.

Such parasitism can also yield better or worse results. It's not a given that the policies of parasitism will always achieve their goals.

It is about finding an equilibrium of terror such that those prone to withdrawing their consent are outnumbered and out-capitalised by those who do consent.