> You can open a terminal and come back in a month and it will still be there. Unlikely kunernetes where containers regularly go down.

You mixing apples and oranges there, by comparing kubernetes workloads to mainframes. Kubernetes isn't really designed to serve long-persistent workloads of that fashion. Although tbf I've had VM's that last for years and real hardware (albeit Sun) that's had over a decade of uptime, so I'm not sure what all the fluff is about.