Pretty sure the quote has something to do with the prolongation of the status quo (and therefore holding back improvement) instead of the individual slave-owner

Pretty sure the quote has something to do with the prolongation of the status quo (and therefore holding back improvement) instead of the individual slave-owner being better/worse. I don't think a poet/playwright would ever roll with "the expected utility is less due to preventing a change to the status quo" instead of the original quote.