Lots of developers have signed up for things. Managed infrastructure services are a very good thing, because running servers isn't easy. Securing data -really- isn't easy. The rise of "Everything as a Service" has certainly changed what many sysadmins do on a daily basis, shifting from running cable and hauling around the crash cart to integration and automation. There is code to be written, even if no user will ever see it. DevOps in many ways exists because Engineering and Operations need to understand the world each side lives in. Old-school ops has not gone away. It's in banks, brick and mortar retail, transportation, and other organizations that comprise a great part of the economy. Some have shifted to new ways of managing technology: a project that fifteen years ago would be deployed in a company-owned datacenter might now use however many AWS instances demand requires. Others, like government labs, never will.