You should blog about some of this, changing names and obfuscating to "protect the innocent" so to speak. Also, read up on the Gervais Principal if you have not :)
Frankly, one of my favorite things in the office was to emit bubbles of incomplete information to individual persons and observe who gets to know that piece of information, mapping alliances at work - they were oblivious of being tested, always triumphant they knew better and it was just fun to simulate a clueless person on my side just to understand how did they exactly operate. Try it, it's fun and a quite harmless "game people play".
Yes, the reality of life is that it's not a meritocracy or even within a stone's throw of it. There's a fine line between acknowledging the reality of it and succumbing to it. The abyss gazes also.
But in a way it's been eye-opening, seeing this darwinian play go on, it confirms a lot of my theoretical understanding of evolutionary psychology, I find it quite fascinating. Not only that, but just observing it shows you how to improve in this area.
But from what I've observed, most people are completely unaware of this side of things. A certain personality seems to be affected by this "issue", and that personality seems to correlate quite highly with caring deeply about their work, pursuing excellence in their field and so on. But alas, no-one has written more clearly on the topic/ psychology of corporate politics than Michal O. Church, I do recommend reading his essays for those affected by the issue (even though he has acquired a bad reputation around these places, probably because this is a sensitive issue).