I agree with most of your individual points… But your thesis relies on a false assumption.
Capitalism is the current problem for 95% of the world… Just like monarchies were a problem for that particular country. Just because many political and economic systems throughout history reflect an aspect of human nature to control and bequeath that control to their offspring, doesn’t take capitalism off the hook. Hell, if that were the case, we could blame everything on the evolutionary drive to be sexually successful, and not place the blame on anyone or anything else. That’s what those at the top would love the rest of us to believe.
You have a very simplistic view of cause and effect. No one thing is ever the cause of anything. Everything is a result of multiple factors. Just because something isn’t the sole cause of another thing doesn’t mean you ignore it. Only shills would think otherwise when the issue of capitalism is involved.