I think your observation of capitalism-with-force vs. capitalism-without-force is spot on. Depending on the issue (and the phase of the moon), I self-identify as somewhere between a libertarian and an ancap, and so run into these practical issues from time to time. They were particularly apparent (and depressing) from the inside of the European Parliament.

I think one of the key problems is that we've never had a society where decentralized power was greater than centralized power, and so, we've always had an X-with-force, where people have been varying the X to optimum output. And of all the X:es tried, capitalism has had the best success. But a capitalism-with-force is still a centralized use of lethal force, and as such, is subject to hijacking by those who find it more profitable to hijack the system as such than to provide a better offering.

So if you will, I was speaking in both terms of "capitalism as we've seen it" and "capitalism in terms of its ideal endgame", and you're right to point that out.

This is why I'm so stoked about the decentralization technologies: they hold the ability to negate the centralized power of regulatory capture, as they defy regulation to begin with.