"Manageable" has been pushed so much further up the list than "talented", that the latter is often overlooked. I don't think I can ever work for a typical big corporation again, at either end of the spectrum. I have become just too bitter.
I'll never forget when my new "boss" hired a consulting company to come up with some innovative product ideas to drive some products into the pipeline. After the initial studies and concepts were ready to be revealed, he organized a big limelight meeting to shine onto himself while presenting all the concepts. Surprisingly, I was invited. As he passed the concepts around the room, I noticed that at least half of the 40 or so that were being shown were almost straight out of my dated lab notebook, with credit to him and the consultants. He was well aware of my notebook. At the end of the meeting, when we had to comment on each of the concepts, I couldn't just sit back and hold it in. I stated my case and opened up my notebook showing the similarities in a non accusatory way. I basically said that I had already shown a lot of these concepts a couple of years ago but that revisiting them now would be a good idea. His comment was, laughingly, "I need to burn that notebook." This is in front of his senior management! A few months later, I am laid off and he is still there kissing arse. Nice.
from my 12 years with that company, I can give you many, many situations that exemplify this. To the original point, he gets away with it, because his managers let him, because their managers let them,...and so on. In the end, they keep their fat checks rolling in, and see no evil, hear no evil.