is the huge cost involved in major core software because it will NOT run properly on Win 7 on Win 8 due to arbitrary changes in command codes by Microsoft (again), and in some cases it will because there is no version of the software for Win 7 or Win 8.

I also suspect a lot of the answers are from senior staff who see the Win 8 phones and Win 8 tablets as the force to move over, but may find major difficulties in doing so.