Since when has there not been an age of the developer and IT together?
IT and app development have always gone hand in hand. A major corporation needs to have the best storage, the most stable sytems and the most reliable databases.
Sure, a couple of smaller apps and cutesy mobile apps can be thrown at a pc or a linux box or two and pretty much ignored as long as they act right, but don't try that with THE major app ( and in a lot of cases hundreds of apps ) and the frontend, midrange and DDB's that a corporation relies on for it's business. The first time it goes down for a week and cost multi millions in business and in some case regulatory punishment, THAT is when you find a good IT dept is invaluable, and are here to stay.
Yes, IT dept's have shrunk and gone off-shore, but this has occurred in all parts of the knowledge industry - including development - and is more a sign of cost-cutting than a major shift in how IT is perceived.