Success is not the same as functional. One could argue that wikimedia has been very successful in its mission and it is at the same time also disfunctional.

I wouldn't call any of the non-profits I've worked at failures.

Hell, many people have described companies like Microsoft as badly disfunctional, but it would be hard to argue that they are not successful.

If I stepped on anyone's toes with my post, I apologize. I was not trying to take a swipe at any one or any type of organization. I'm still involved with a number of organizations and admire and respect the work that they do.