There are many ways to pretend that a problem has gone away. You can close your eyes so you can't see it. You can put your fingers in your ears so you can't hear it. Or, in the case of financial regulation and the investment banking industry, you can legislate the problem out of existence with a barrage of new rules and regulations. Sadly, none of them works particularly well.

Take the conflicts of interest between equity research and investment banking. This problem has officially been solved. Analysts and their research are now certifiably and wholly independent.