Don't define the problem as the lack of your solution, ...

...unless you want to manipulate the decision makers into accepting your solution. In this case, the Democrats on the Financial Crisis Commission have decided that the crisis was caused by a lack of derivatives regulation, not a housing bubble.

I would hazard a guess that Fannie and Freddie outbid the investment banks for this Committee. In the immortal words of Deep Throat (the whistleblower from Watergate), "Follow the money."