Even the mighty are falling. The last two major independent investment banks on Wall Street, Goldman Sachs (GS) and Morgan Stanley (MS), have received permission from the Federal Reserve to convert from traditional investment banks into commercial banks or bank holding companies. Plenty of ink, digital or otherwise, has been spilled about the disappearance of investment banks so I won’t dwell much on that. We’ve seen the collapse of Lehman Brothers (LEH) and Bear Stearns. Still somehow, I’m sure there were some who sentimentally held out hope that the two …