“common ownership” — or the reality that it describes, which isn’t common “ownership” at all, is onerous. so is the inevitable concentration of wealth in relatively few hands that laissez faire inevitably brings about.
I think the concentration of wealth in relatively few hands is far more likely under fascism (or, if you prefer, "crony capitalism") -- or any other kind of collectivism for that matter -- in which politicians grant and protect monopolies and/or mafias.