MS DOS is the definition of bloat from 4.0 onwards. It’s like people assume a CLI is the hallmark of efficiency without any real understanding of the host OS.

2x being “ridiculously large” is the same as as 1080p display genius.

The word you’re all looking for is sandboxing. That’s what containers are - sandboxes. And while they a different approach to VMs they do rely on some similar principals.