People come away concluding that, because the problem with Wall Street is not deregulation, despite all the propaganda to the contrary. The problem was selective regulation or deregulation, whatever benefited Wall Street, as well as selective enforcement and interpretation of law. In a nut shell, Wall Street is in control and reconfigures the legal apparatus to their advantage; they don't randomly dismantle it.
I think people like to simplify regulation as either good or bad and fail to consider how biased it can be. Unbiased software rules that can be openly analyzed and force everyone to play fair are good. Selective regulation written by those with money is terrible.