Mike Bloomberg makes billions of dollars from Wall Street every year. But his plan to rein in the financial sector is very aggressive. If he were to become president, it would be fought vociferously by the biggest clients of Bloomberg LP, the financial-information company that's the source of the candidate's wealth.
Why it matters: Bloomberg's detailed financial reform policy, released Tuesday, could cost Wall Street trillions of dollars while significantly increasing regulatory scrutiny of financial activities. It's a vision that would not be at all surprising coming from Elizabeth Warren, but that was less expected from an avatar of red-blooded capitalism.