I'm pretty sure Paulson was forced to sell his GS shares when he took his current post. Lehman and BSC were both badly managed and were hemorraging money, they deserved to fail. Bear got bought for a fraction of it's worth and most of it's employees got fired. Lehman went bankrupt but Barclays is buying pieces of it and keeping people on, so in the end I think they both got pretty similar deals other than the stock going to zero. I don't know if Paulson is corrupt or not, but I don't think he has any financial interest in GS doing well.