My bad I misunderstood your answer to my first comment. I understood you were taking about the marketability of the produce, not of the means of production.
In any case, that is the reasoning of my second point when originally answering to you: A hypothetic situation where most people would own means of production, would still be capitalism when means of production are free to exchange hands.
That is too say: it's capitalism by definition as long as the means of production can exchange hands freely, it doesn't matter if they are all concentrated on the possession of a few or not.