Being that his videos are free, and that his web site doesn't charge money for access, I can't see what makes you say that.
Who REALLY profitted?
Try Haliburton, Carlye Group, many unnamed companies that deal in military supplies and equipment, and of course, Israel.
Not to mention those that placed all of those "Put" options on American Airlines and United.
Let's not forget Larry Silverstein either, as he made out like a bandit on the insurance money for the WTC towers.
We can also add the federal buracracy to the list, with the implentation of the Patriot Act and the Department of Homeland Security, TSA, and all of the law enforcement agencies collecting money for the "war on terror".
If he wouldve watched them.. the first and the fifth particularly he would know.. but of course keeping ones head in the sand is easier.. dont want to disrupt their world view.. keep the faith :P