I have been reading about this issue becuase it’s important to learn where other failed in order to try to avoid it.
Mainly it’s due to different combinations of factors:
- Understimating scope of organizational change needed,
- lack of methodology while managing projects,
- Insuficient time to develop competent proffesionals,
- Bad timing,
- Inadequate or insuficient change management process.
I will increase this list when I read more. If you know something else, please let me know.