Ok, but all those empires, what were they built on? They were built on the megalomaniac greed of a bunch of predatory monarchs and their clerical stooges. None of it came from the people. That's very different from today's US.
Only if you think that our democracy is a sham. I don't think that's entirely the case, and I don't see how that prevents broad access to the resources needed to start a startup.
Our democracy is at most only 50% a sham. I think if we're looking for scapegoats for all of the problems of society, we should go a higher level and blame corporate personhood itself rather than individual sociopathic executives.