Earlier quoted context omitted.
> rather behind in the foundations. It's a single user system with no real security I believe multi-user systems are actually an ancient, outdated rather than a "modern" concept. It made sense when computers were huge, expensive and many users shared one even at work, let alone at home. Nowadays computers are almost never shared. Even when people used to have just one home PC per family (during pre-Win7 days) they mo…
Modern multi-user paradigms also have very weird ideas of what’s shared. Like, installing or updating software is the same permission tier as accessing another user’s documents, wtf?
To some extent, yes. If I can install software of my own choosing on basically any normal desktop OS that will appear to other users of the system as "LibreOffice", "Firefox", etc. then I more or less have access to all their data.
MacOS is starting to sandbox applications but not by a lot, and of course Windows Store sandboxed apps are more or less dead in the water.