Earlier quoted context omitted.
Free market forces don't prevent it from getting close enough to cause a problem (if that's even possible under capitalism- the problem we're talking about is due to the attempt to gain a monopoly, not having one). I couldn't care less what Standard Oil's maximum market share was, you're arguing an irrelevant technicality. My point is, again, that in this case the prospect is what causes the problem.
> cause a problem The "problem" was that kerosene prices dropped 70% under SO. The real problem was that Rockefeller was rich, and then (like today) a lot of people just can't stand the idea that others are rich. If you're really interested in going beyond soundbites and understand what was happening, I really recommend Chernow's "Titan". Chernow actually agrees with you, so you can't argue his book is unfair. Cherno…
But to spell it out, the problem is that the winner-takes-all aspect encourages people to overwork themselves or their employees, despite the diminishing returns that brings.
Maybe you're just so convinced of capitalism's good nature that you were blinded to what we were talking about in the first place? ;)