I think it's the Catch 22 of college coaching. To get to the highest ranks in college, you have to have an ego and determination that doesn't settle for security when it presents itself, so often you see these successful coaches try to make the jump to the pros and fail in the process. I bet Chip Kelly thinks he can do what he's doing at Oregon in the NFL, but the records of other coaches that tried aren't as successful, including the best coach in college.
I totally agree - these coaches are of a competitive nature that is beyond my comprehension, and their what motivates them is Machiavellian in nature.
You also see college hoops coaches drag their asses back with their tails between their legs after failing at the pro level, and that's why I have such grudging respect for coaches like Jim Boeheim and Mike Krzyzewski.