What goes around comes around. This scenario is nothing new, the buzz words and jargon are, the scenario is not. It has always been a balancing act between IT and the business.
Some Marketing, Sales or business drone has read an article on the latest and greatest bit of vapourware and wants it operational as soon as possible. It's the job of IT to bring some sanity and forward thinking to the process. Denying it outright is dangerous; not thinking about how it integrates into existing business and systems is disastrous. It’s the art of balancing these two extremes that is the key. Regardless though it’s IT that’s blamed for the failure. The other department if it succeeds.
It’s the way it was, is, and always will be.