Now you may think that desperation makes for a better worker but I would disagree, http://billmoyers.com/2014/07/23/why-big-business-loves-desperate-workers/. On the contrary, desperation makes for more profit for those who are already doing well, while the desperate are living an existence that has no clear path forward to a better life. We see what desperation does when we look to the black market of prostitution, gambling and drugs. When otherwise decent folks have to sell themselves in order to remain alive, http://www.cbsnews.com/news/the-desperate-journey/. With a basic income we eliminate desperation as a consequence of low wages being offered to those who have little to no ability to refuse them.
Keeping our workforce in a state of poverty may well help the wealthy to grow their own wealth simply by denying workers living wages but it cannot last since there will always be a need for workers to have disposable income to buy products in the marketplace. As well the growing unrest from the working class cannot bode well for those wealthy who are manipulating them through the political process. A day of reckoning has always come as the past has taught us but it seems that many, within the republican party, have no time for knowing what historical event is about to rear it's punishing head up at them.