Of course, it is a horrible thing to happen. Just to give you some apps from my dock.<p>Chrome, Spotify, Outlook, HipChat, Viber, Skype, SourceTree, Atom, Sketch, Dropbox.<p>All these would be not be usable because they are not sandboxed. Basically I would have to install Windows on my Macbook and I would virtualize Mac OS X so I can use Xcode and I would use Windows for everything else.<p>It would be suicide for Mac OS X and if you think Apple is so stupid to do it, okay then...