Sorry, you've lost me here, in what seems like an extreme case of No True Scotsman. Just a few weeks ago, Saudi Arabia was the major news story for allegedly sending a hit squad to secretly murder its own citizen -- a man not charged with a crime but happened to be a vocal critic of the regime -- in its own embassy. Nevermind the convoluted attempt at a coverup, nevermind the regime that operates completely on nepotism.
I'm not saying they aren't nepotistic nor prone to poor attempts at covert ops. Just that they expect a modicum of results, even from their appointed family members. No one wants to die on an airplane because their cousin wanted a few extra bucks to look the other way on airplane safety. Where as bribes for access in the first place are very common in authoritarian regimes, I wouldn't even call that corruption per se, because they have the feudal power to extract the value from the post as long as they perform.