Let me start by saying his view of the world is very jaded and does not reflect my own. I don't think most people are all about maximizing their own benefit at the expense of other people. So I think he is wrong before he even gets started. This country is extremely charitable. That has historically been a distinguishing characteristic of our country. Second, nothing he is saying is new. Our founding fathers considered Democracy when forming our government. The problem with Democracy is that it becomes a dictatorship of the majority. In other words, when groups decide policy, the majority always get their way and the minority never get theirs. It is simply tyranny by the majority. I can't remember who it was that made this analogy, but I thought it was a good one. If one person decides to take away your liberty we call it a dictatorship and recognize that it is wrong and not in the interest of liberty. If the majority votes to take away your liberty, how does that legitimize it more than when one person does it. It is still tyranny. There is nothing magical about Democracy.
Finally, he acts as though corporations control society. I do think we need to work to reduce special interest influence in government, but it is a fallacy to think corporation control what products are made and how they are distributed without any input from the population. Many corporations that were leaders in their market have gone bankrupt because they did not respond to the needs of their customers. The profit motive causes corporations to respond efficiently to the needs, wants, and desires of their customers. You can find examples in every industry where corporations did not do that well and they no longer exist. I think much of what he says ignores reality and focuses on a fantasy, Utopian, world that can't and doesn't exist. That is common among socialists and communists.
Do we have problems. Absolutely, because no system is perfect and every system is only as good as the people who run it. Our problem, in my opinion, is the rampant expansion of government control over many aspects of our lives. So I would agree with him in terms of government having too much authority and influence.