In Five Things You Need to Know About DevOps from a Director of Engineering, there are some great quotes from John Skovron, one of the Directors of Engineering at TIBCO.

"any CIO who is satisfied with a status quo of sludgy, slow deployments should be brushing up his resume, because he’s going to be looking for a new job soon."

"manual methods are no longer cutting it"

To understand the financial benefits, have a look at The Value of Development Automation.