Factors forming the Deep State.
Combine: War Industrialization - + - global need for American Products Post War - Victor (w USSR) + Idealogical rivalry capitalism and communism, a capitalism that is now rather firmly plutocratic & oligarchic (Where virtually all wealth and by extension political power is controlled by a small group) and state socialism (where the majority of production is state operated):
Produces a sense in the wealthiest circles that they themselves would be 'extinct' if the societies in which they dwelt ever adopted these other practices (unless they themselves could transplant as the ruling class in the next system), as some no doubt will.
Banking and Finance: