I also saw entities (mainly gov agencies) where it has a disastrous result. Because management know they will be out in 3 years, they spend as much budget as they can to initiate as big projects as they can and have them on their resume, plan beyond their 3-y stay here, and leave with a big bonus. This way they never get asked why it is not complete ("because it's plan for a couple more years"), the project fails eventually (people actually working on the stuff end up leaving too at some point), and the cycle repeats with the next guy.
