That's an overly narrow view. I start with the assumption that Costco has already found the optimum wage to pay their employees. It's a rare business that does

That's an overly narrow view. I start with the assumption that Costco has already found the optimum wage to pay their employees. It's a rare business that does well by mistreating their employees. I'm trying to emphasize that this has nothing at all to do with any altruistic motives and is entirely consistent with profit maximization.