I would differentiate between power and freedom, as the author does.
Power would be the capacity to affect other people's actions, often arising from having a position of authority over them, but can also occur in the form of influence over them (soft power).
Freedom would refer to having the means to choose our own actions with fewer or weaker external constraints.
The author has achieved some degree of financial freedom, but not much power from what I can see, beyond the limited power that his modest net worth can buy.
Freedom requires power over others. You can't avoid work unless others are providing you food. You can't get shelter unless you can keep others from taking it from you.
The real confusion is living in a society where most power is hidden and records are given meaning.
This guy has a company doing $100M and I bet you his kids wish he was at home more. He talks a good talk about cashing out but he has already done enough. What is he waiting for? Theory: he doesn't know how to stop. Being a captain of industry is tied into his identity and he can't give it up. It has power over him.
One definition of addiction is when you engage in a behavior despite its deleterious effects on other aspects of your life. A lot of things we do to "feel control" are closer to that end of the spectrum than they are to healthy behavior.
People live beyond their means and their boss can make them violate their ethics simply by threatening to fire them. In many, many cases this is a bluff, and someone who's financially stable can tell their boss no, or take a risk on a new job.
I don't think it's cool to take a common and ambiguous term like "power" and claim that it will now only refer to a single, narrow meaning. It's not constructive. Better to qualify the term in a way that everyone in the discussion knows what you are talking about.
The original author clearly has a point to make and providing an explicit definition of the relevant terms helps communicate them. If you want to discuss something else about "power", the comment section of this article is probably the wrong place to do so.
Power would be the capacity to affect other people's actions, often arising from having a position of authority over them, but can also occur in the form of influence over them (soft power).
Freedom would refer to having the means to choose our own actions with fewer or weaker external constraints.
The author has achieved some degree of financial freedom, but not much power from what I can see, beyond the limited power that his modest net worth can buy.