I think all you have to do is look at modern American income disparity in the United States over the last 50 or so years and you have your answer. Sure, the poorest did become moderately better off financially in terms of wages. Yet did there quality of life increase? I would argue that the size of the pie is irrelevant past the point of what is required for basic survival. What truely matters is the relative size of the pieces. Especially in a country where we have equated money with speech.