@8666b6b1 @Eric Zhang if you read further, the dude actually makes a decent point that most system-wide services like ssh or sqld don't need to be installee system-wide. There's nothing in the world that shall prevent you from running sql dbms as an ordinary user, except scarce resources like limited number of ports and the fact that L'Eunuchs distros are trash.

Imagine a system where every user is allocated his own IP or even a block. This doesn't require virtualisation at all. The idea of privileged ports also goes away with this one. Sounds actually pretty neat, if you ask me.