For my own part, this is still what I love to do. I'm busy 10 or more hours a day and at least eight of them are spent with some technology I knew nothing about six months ago. I was layed off from another startup at the end of September and started this current gig three weeks later. We just finished five weeks ramping up on Google Container Engine, during which time I also learned to use GNU make for the first time, and learned about etcd and Google Compute Engine. What it boils down to is this: stay interested, and stay current, and you stay employed. If those things are not within your power you no longer belong in this craft.