The Cathedral, Bureau and Castle as well as the Show are concepts created by Curtis Marvin to explain the operation of the ruling Regime.
https://www.youtube.com/watch?v=o538LQqJUbI
I don’t agree with Yarvin. He has a rather top-down view of societies. The concrete-and-steel world doesn’t work that way, quite.
My model is a mishmash of Paul Johnson “Birth of the Modern”, plus Bernard Anderson “Imagined Communities”, plus some of Gramsci - Yarvin cribbed a lot from Gramsci - and Codevilla puts it all together.