I agree they aren't the cause of the problem. A bit ago I worked as a private contractor in a government facility. The bureaucracy was such that it was difficult to try to be productive.
We had an important set of documents scheduoled for delivery by a certain date, once. All the workers sucked up all the OT and produced a third rate deliverable only a few weeks behind schedule. The schedule was changed and a celebration held for making the deadline.
I told a fellow worker that if I were in charge I would have been throwing stuff and cursing, instead they gave everyone pizza, ice cream, & atta boys. After as while all but the most diligent workers will become disheartened and give up in such an atmosphere.