Change yes but not as drastic as this article
I had professors in college who used to say the same thing some 20 years ago when the big move away from mainframes was starting and here we are still talking about it. I find that the cloud may bring more change but I don't see IT departments downsizing as drastically as the author thinks. I do think larger enterprises are adopting real IT governance and the executives are more involved in prioritizing projects and budgeting which does away with the perception that IT always says NO. And I also add that it has been my experience that when IT says NO, it is usually because of a compliance issue or a cost issue. Again, a well designed governance process will alleviate that problem as well.