There is no such thing as "unskilled" labor. Every task requires some measure of training to perform. We can say "low skill" labor, but that doesn't eliminate the problem of cost of training. Many studies have shown that it is more cost effective in the long haul to train and maintain experienced and skilled labor than to have massive churn and waste resources constantly starting over. But, try explaining that to a billionaire who doesn't give a fuck, or to an angry paycheck-survivor who can't find work, because the billionaire thinks peasants are never worth anything.