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No, it's a model of property rights. “Free markets” are a slogan, but not even a particularly coherent concept much less a concrete thing that is present in capitalism.
To me, it's similar to looking at a voting system like first past the post and identifying that the system tends towards two parties as a fundamental nature of the system. Underlying motives and strategies of individuals within the system will produce this effect.
I'm not commention on the validity of the "no real communism" statement here, just the comparison of it to the "no real free market"