One mechanism explained by Piketty. Rate of return on capital is higher than wage growth. So the wealthy get richer at a faster rate than the average worker.

One mechanism explained by Piketty. Rate of return on capital is higher than wage growth. So the wealthy get richer at a faster rate than the average worker. This amplifies inequality. http://www.newyorker.com/news/john-cassidy/pikettys-inequality-story-in-six-charts http://www.newyorker.com/news/john-cassidy/pikettys-inequali...