While I don't doubt much of this has truth, it's a bit of a one dimensional look at foreign and trade policy. Nothing world powers do has "one purpose". Motivations, intentions, and outcomes are manifold.

States don't exist because they have a monopoly on violence, it is just that a (at least semi-) monopoly on violence is a core trait of a state. Statehood is the evolutionarily stable outcome of any geographic population so far. An area without a state will, without exception, develop one.