The case for breaking up the megabanks

inadvertently Alan Greenspan made a compelling case for breaking up the big banks.

UPDATE: 10:45 AM Greenspan Says Financial World Too Complex For Regulators 
Former Federal Reserve Chairman Alan Greenspan made the kind of admission this morning that may trouble those who assume that better regulators -- rather than a wholesale rewriting of rules -- will better protect Americans from a future financial crisis.
Regulators can't keep up with today's megabanks, he said. They're too complex. Regulators, in short, don't have a chance.

Clearly if you create a system that cannot be regulated because it is too complex then the risk is unacceptably high and it would dwarf any benefit you might gain.