To me, apt-get install always 'just worked'. Same for yum install, emerge etc. I understand it's easier to ship software as a "almost VM", but imagine everyone

To me, apt-get install always 'just worked'. Same for yum install, emerge etc. I understand it's easier to ship software as a "almost VM", but imagine everyone doing it... need a browser, download firefox docker image. Video player? docker image! Text editor? Docker image! If firefox can make it 'just work', and whole (eg.) lamp-stack can 'just work', why not others? Docker is a relatively new thing, and software worked for decades before that, without any real issues.