It was reported today that militant insurgents have found a way to hack U.S. drones in flight over conflict areas using a $26, off-the-shelf computer program. This seems both terrifying and hilarious given that an unnamed government official related that the unencrypted signals represented a flaw that was noticed during Bosnian operations in the '90s. Furthermore, the officials related that "...the Pentagon assumed local adversaries wouldn't know how to exploit it."
I'll leave broad interpretations to others in favor of a simple comparison of these separate intelligence approaches. The U.S. Government spends roughly 4.5 Million on each predator, plus expenses for maintenance and operation. The insurgents spend $25.95 plus shipping on software and something like $40 on a used Dell laptop attached to an old umbrella for an antenna.