Not sure I agree with all of Greenspan's comments, but I agree that some of the large financial institutions should be broken up. It was well known, or at least discussed, that when Geithner and the treasurey department began "assisting" with some of these mega bank mergers that eventually they would also need to be split up. There is inherently more risk to a nation's financial industry when a relatively few number of banks control a relatively high percentage of the market. Just look at the consolidation of activity in the banking industry over the past couple of decades... and certainly the last few years.