So your definition of 'ultra-capitalism' is plutocracy? I think the more plutocratic a society is, the less possible free markets are - and the lack of free markets is antithetical to any kind of real capitalism. I would call such a country 'faux-capitalist', not 'ultra-capitalist'.
Crony capitalism is no more representative of "capitalism" than rigged elections are representative of "democracy".
Hm, we have been through this discussion before, haven't we?
People seem to mean very different things by "free market". The Libertarian definition seems to be "totally unregulated market" which in my experience instantly degenerates into oligopoly or monopoly market, typical of crony capitalism. If "ultra-capitalist" is not that, what would it be?
I believe that a relatively free market can only be sustained if it is regulated by a government that is commited to it and is stronger than any individual supplier (or consumer), or any small group thereof.
That is visibly no longer the case in the US, for many markets (such as TV, energy, banking, operating systems, ...) It has always been worse in Brazil...
You may have discussed some of these principles with someone on this forum. It was not me.
I see it exactly the opposite way from you: The regulations you believe are necessary for a free market (ironic, if you think about it) are always and everywhere used to subvert market forces, and give preference to whichever entity has the most political control over the 'regulators'.
I can't speak for all Libertarians, but personally, I believe that an entity of some kind is necessary to prevent those who would deprive others of their life, liberty, or property from doing so - and I believe that acting in a manner that would make free markets less free is one way of imposing such deprivation, and consequently, should be prevented.
The goal is to minimize coercion as much as possible. It will always be necessary, however, to coerce those who would harm others into not doing so.