I just watched Stevenson's video. Yes, he's absolutely right. The problem we have now is that the world has shrunk, and capital is moving more frequently to places where it can pay less tax. You know, this video is making me question my anarcho-capitalist ideas. I believe even less in socialism, and certainly not in utopian communism. What I am certain of is that states (though I should say: politicians, with a lowercase "p") oppress the poorest people for the benefit of large tech corporations.
Unfortunately, I have no choice but to share your pessimism on this matter.
I'm reaching a conclusion that no system on it's own is the answer to all of our problems. I was wondering recently if the case could be made that we had anarcho-communism when we lived in tribes or in early agricultural times, but even then we tended towards having some form of leadership in the form of chieftans.
It seems to be human nature to always want more than you currently have and those who are the most succesful at achieving this tend to be the ones with more power. They are the ones who will learn how to play any system to gain the most from it at the expense of others.