Those that survive, or perhaps thrive, get promoted.
An interesting observation there Steve. Unfortunately I've seen too many examples where bad managers are promoted to get them out of the position they're in. Those that are good at their jobs are held there and not given the opportunity to move on to bigger and better things. Of course, this is usually because of the bad boss at the helm, a culture that has developed over time, or the fact that it is too much hassle to sack someone.
All too often I find those that please their boss are promoted
How very true, and in respect of what I've mentioned above, they are simply able to survive despite their incompetence. It's one of the reasons I left my previous employment as I just found it too frustrating.