Because we live again in a new Gilded Age, with its monopolies, robber barons, regulatory capture, and corruptions.

If you want to understand these days, you have to understand the Gilded Age, the rise of Unions, the New Deal, the G.I bill, the rise of the middle classe post WW2 until the end of the 70s, when reagan started to reverse the course engaged by FDR in the 30s, gutted every regulation intended to protect workers, envirronement, gutted union coercitive power, deregulated financial system with its new credit offering allowing to compensate diminished real purchase power of middle class salaries, slashed taxes on highest tiers of population and corporation, slashed public service.

The subprime crisis is a direct consequence of this...

For a short introduction in the matter, I suggest you to watch the last episode of season 33 of The Simpsons.