I like your analogy government : central nervous system :: banking sector : circulatory system. I also agree with your characterization of contemporary liberals and conservatives.

In fact those two ideas (or something similar) were what I had in mind when I wrote my article Why Libertarianism Implies Authoritarianism. Check it out if you get a chance, and thanks for reading.

https://medium.com/politically-speaking/why-libertarianism-implies-authoritarianism-98e105c0f6ee