Who stood to benefit the most from 9/11, Al Qaeda or Israel?

Your attempts to point the finger at Israel as some kind of accusation of fault are transparent, misguided and disingenuous. The fact that New York construction companies have also benefited from 9/11 doesn't imply they were connected to the event, does it. And yet that's your implication. How shameful of you. (Unless you're simply an Islamic extremist tool, in which case it's understandable).