You don't think it's just to maintain some sort of hierarchy in order to defend their revolutions until such a time as that defence is no longer necessary?

I am not convinced that it is possible to have a simultaneous global revolution, especially with the way mass media is today. Given this, it may be necessary for us to accept the need for the earliest revolutions to operate in this way. As time goes on, as capitalism weakens more and more, the need for such states decreases and I imagine the last revolutions will be incredibly token in the level of use of state and/or authoritarian measures because they simply will not be necessary.

The earliest revolution on the global scale have to contend with an absolute monster trying to crush them utterly. Their conditions will be vastly different to the later ones.