I hope that this kind of article doesn't promote the mindset that if you're not financially successful by the time you turn 30, then you're either lazy or unskilled (I.e. thinking that leaders are fundamentally different than employees). There are a lot of business leaders today who harbor significant contempt towards their own employees; you can see it by how they talk about their employees and how they interact with them.
It might seem like some employees aren't ambitious, don't take initiative and don't want to step outside of their comfort zone but that's rarely true; most employees do want to take control of their lives and they devise plans to make it happen; but dumb luck is just a much more powerful force. You can't beat dumb luck.