First off, a LOT of senior executive posts go to brokers, bankers, et cetera. You could probably make as big a case for Defense, State, Interior, or Commerce to be part of a banking conspiracy.
Second, it is extremely rare for a senior exec at the CIA to actually have any intelligence background, and almost never as a lifelong career. Remember a guy named Robert Gates? He was the first--and LAST--career CIA officer to be appointed Director of Central Intelligence (DCI) back in Bush the Elder's term. A lesson got learned from that--anyone who spends a career at Langley is going to have a building full of enemies. Every last one of them showed up on Capitol Hill to smear Gates.
Third, do you really think political appointees do anything useful for their department or agency? They're there to be "adult supervision" and to fall on their sword when their underlings do something really stupid. Actually running the place is the province of Civil Service. I'm more suspicious of Robert Gates in this regard than I would be of some political drone.