The real problem with Piketty’s taxation/social welfare solution to wealth inequality is that it does nothing to change the source of systemic inequality, debt-based neofeudalism and neocolonialism.
Those of us concerned by widening wealth/income inequality have been following the work of Thomas Piketty and Emmanuel Saez for many years. I’ve cited their analysis many times; for example: Two Americas: The Gap Between the Top 5% and the Bottom 95% Widens (August 18, 2010).
Thomas Piketty has taken his meticulous research and turned it into a book, Capital in the Twenty-First Century, that has catalyzed the discussion of widening inequality by essentially proving that capital expands at rates far above the overall economy and wages. Since capital grows much faster than wages or the underlying economy, the gap between earned income and unearned income (rents) widens, along with the net worth of those who own capital and those who own little to no capital.