Why not? They're doing the labor. You're just assuming your conclusion here. Your premise is that "having capital" deserves a reward and "doing work" doesn't, a

Why not? They're doing the labor. You're just assuming your conclusion here. Your premise is that "having capital" deserves a reward and "doing work" doesn't, and so your conclusion is that having capital should be rewarded and doing labor should not be. But if you change your premise, the results can change too.