But even when the labor-force is paid at its value it remains an exploitation, an injustice. Injustice comes from the market itself,

This is the moral one. Exploitation is an injustice.

That is the logic, the “justice”, of the market.

This is the logical one: Markets basically perform justice.

To me, the scandal is not that exploitation is unjust, the scandal is that just exchange means exploitation and spreads poverty.