Seems that Muslim jihad organizers understand economics. This works against Western jihadis like the one profiled in the article. From the piece:

...But jihadis say there is a more important factor: the supply of bombers exceeds demand, and British bombers are too expensive. “For the cost of equipping and transporting a British fighter into Iraq—about $2,000—we can shift 20 guerrillas into Iraq from neighbouring Arab states and Chechnya,” says a retired jihadi field officer....