The one central and indispensable axiom of metaphysical capitalism is “I am my own” — I am a commodity wholly owned and operated by myself in service to my own interests, as defined by me. I am my own store of capital.
Therefore, the socio-political order is to be evaluated strictly in terms of whether it helps or hinders my autonomy.
Also therefore, questions of political economy are empirical and pragmatic rather than dogmatic. Should I determine that the pursuit of metaphysical capitalism is best aided by economic socialism, then a socialist I shall become.