Who profited from 9/11?

From a Village Voice article on the intersection of 9/11 and money:

The September 11, 2001 attacks have been a symbol of many things and many causes, but like the lavish, flag-draped rebuilding of the site, it has also been a vehicle for enrichment. From corporations to politicians to government officials to nonprofits to the security industry to publishers to the health industry (not to mention the incidents of outright fraud over the years), many people have found ways to profit from one of the nation's biggest disasters. 9/11 has created an economy all its own.

Read: 9|11: The Winners. (Village Voice)