It works, if the whole organization is make responsible
In slide 7, it's not just that people get comfortable doing things one way and hate to change. They learn how to do things one way, then realize what thin ice they may be on if they take responsibility for making things work right, regardless of what the issue may be. Much smarter, given the tasks that might be pawned off on them, to stick with what they know. It takes responsibility throughout the organization, not just a few flexible people taking on inordinate tasks and responsibility, for DevOps to work.