You cannot control payment to employees like that, companies just find a way around those kinds of laws.
Better to regulate the institutions themselves so that they dont get 'to big to fail', don't get to combine access to cheap money with access to the financial markets, don't get to insure themselves and so forth.
Better to regulate the institutions themselves so that they dont get 'to big to fail', don't get to combine access to cheap money with access to the financial markets, don't get to insure themselves and so forth.