To understand why 911 happened you have to look at it as a crime not an attack. Any cop will tell you to look at the motive, who benefits and why?
Shortly after 9/11, there was an FR thread, “Profits of Doom”, going into odd trading in the options markets just before 9/11. “Sell” options on Boeing and airlines being very unusually high.
Then media coverage stopped.
My guess was that the trail led to people who could not be touched.
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To me it is interesting there are viable jihads along geographic areas where there is either oil and gas or pipeline export regions. This tells me that the Saudis - maybe with a wink and a nod from the USA and some western countries - were truing to destabilize oil/gas and pipeline countries after the collapse of the Soviet Union.
Qui bono. Period. The Saudis are about to get served a crap sandwich, and my only hope is that the forced feeding is televised. And don’t forget the double bonus round- America in general and the Republican party in particular, gets rid of the parasitic Bush family influence when it happens.