The only thing I cannot see clearly is when it will happen. Here are some mechanisms that are driving the world from Nationalities to Plutocracy. That list is just off the top of my head but there are many more. My crystal ball cannot tell when the world will dispense with nations and have the corporations of the world run the world. When it happens it could be a slow transition such as the example of the British King and Queen where they are just showcase but do not run the government.
Corporations already do run the world.