Businesses generally update to stay out of trouble. They don't want to find no one can support their computers because they are too far out of date. However many will take that risk and stick with what works, never looking to improve what's good enough.
The computer industry on the other hand is always excited about the amazing new things computers can do. In many cases these are worth while but only makes sense if someone is there to applied these new abilities to the business.
Biting the hand that feeds IT
