The root evil of capitalism — which is really a political system — is that politically it bars people from using land for free for subsistence. Not having such free access to subsistence land, drives people to becoming either employers or employees, depending on their capabilities and good fortune.
I am surprised that Wolff, who claims to be a Marxist economist, does not find this truth in the writings of Marx. It is there in Chapter 26: “The Secret of Primitive Accumulation” of Capital.