[throwaway894345]

What happens to the disciplined single dev when their EC2 instance falls over in either environment? How do you get things back in sync without code to automatically stand things up in the right state? And if you're going through the work of writing/maintaining that code, are you saving anything over using Kubernetes (consider out of the box, Kubernetes gives you logging, ssh, process management, service discovery, etc)?

[fweespeech]

Not everyone uses EC2 which is prone to fall over.

And the disciplined single dev documents their changes. That is why it works in a 1 man shop but not at scale, there is always someone who is unreliable once the group gets large enough.