The jobs crisis is starting to hit Wall Street banks and brokerage firms, according to a series of Wall Street Journal articles (“Wall Street Wielding the Ax,” by Aaron Lucchetti and Liz Rappaport; “Credit Suisse Set to Ax 600 Jobs,” by Katharina Bart; and “Here’s Why Wall Street Is Cutting Jobs”). A regulatory crackdown on high-risk proprietary trading is reportedly to blame. As the Wall Street Journal put it, “[a] longtime secret sauce on Wall Street ? derivatives trading ? is drying up.” In addition, less trading by retail and hedge fund clients means less fees and commissions are coming in.