"A dynamic is put in place in which debt keeps labor down – not only by eating up its wages in debt service, but in making workers suffer sharp increases in the interest rates they have to pay or even risk losing their homes if they miss a payment by going on strike or being fired. Alan Greenspan explained that unemployment was not needed to keep labor down these days. All that is needed is to traumatize and disable them politically by debt leverage. This is why, despite the fact that productivity has risen so dramatically, the real economy and its wage levels have tapered off in an S curve. The magic of compound interest has increased debt (and the savings of the 1%) to more than absorb the productivity gains. And this financial overgrowth has accrued to the 1%, not to the 99%."
— Michael Hudson: Productivity, The Miracle of Compound Interest, and Poverty « naked capitalism