Come off it. There's a lot more to continuous delivery than ci + deploy.
It's goes hand in hand with BDD and automated testing. I reckon there's a lot less people doing this stuff today in the wild than you'd think.
Sure there's the Netflix's n googles of the world. It was only a few years ago I would consult on projects that would have no CI. It happens.
The same thing is happening today, just because you read about kubernetes or swarm simply does not mean anything like the majority of the people out there are using it in production. Just go to a conference and and watch people stick their hands in the air.
Sure SOMEONE might have been doing continuous delivery back in 2005, it certainly wasn't me. I was too busy learning about data access objects vs ORMs and releases were 3 months away if you were lucky.