> We should never forget that at the root of containerization is a desire to keep everyones shit sorted. That's been a Unix thing forever.

That's literally the point of operating systems: To allow many people to share the resources of one machine without being able to interfere with each other. Modern containers and VMs are just reinventing operating systems, and unfortunately they're doing it on top of existing operating systems rather than building -- you know -- a better operating system.