This is the story we'd like to believe but it's not true. The 9/11 hijackers were educated as engineers, living well in Europe not in destitute poverty. The solution isn't more money and more education, the 9/11 hijackers had that in spades.
I don't think what you said makes what I said any less true i.e. there's probably a large mix of backgrounds in Islamist movements. I would however be willing to bet that the majority of the TTP are recruited in a way similar to what I described above.
Note that the feudal landlord is my cousin, and the guy/village is based on a real person, so I'm not just pulling this story out of thin air (i.e. anecdata).
