Monopolies are broken by capitalism just as much as they're created by capitalism. The whole "end-stage capitalism" schtick is wrong because a free market will lead to the ossification and then breakdown of a monopolist. You just have to finish spring semester of Econ101 to find out how.
In it's origins it was about the capital ruling, as opposed to the aristocracy. So political power would be in the hands of people with capital, not the landed aristocracy. The means of production only entered the equation with the industrial revolution. And capitalism is older than that, albeit not much older
