Why is Goldman allowed to game the system?

" Due to disastrous bets on Lehman paper, the giant Reserve Primary Fund had broken the buck a day earlier, causing an investor run on the money-market funds. Between that, Geithner thought, and billions of dollars of investors’ money locked up inside the now bankrupt Lehman Brothers, that meant only one thing: the two remaining broker-dealers—Morgan Stanley and Goldman Sachs—could actually be next."