Private ownership, directed for the purposes of profit, is inherently "unfair." Markets have utility in finding demand at low levels of development, but in terms of accountability and fairness, directing production for the purposes of profit rather than the satisfaction of needs will always inherently trend towards conflict between workers and owners. Even the most benign "owner" is still going to be producing for profit, trying to maximize production and consumption, all in an incredibly inefficient manner in order to line their pockets.

Collectivized production can be more transparent and directly accountable. Full abolition of private property into collectivized production and distribution is a gradual process, but it's one that marches on as development continues. Since all markets are "mixed" right now, it remains important that we identify where the power lies in the system and ensure that's in the hands of the working classes.