Yeah, um, how far......?
How far, really, is it going to get?
Ok Windows doesn't stand a chance, it blows away like chaff in the wind against any serious security hack. But major servers don't run on Windows.
OSX fares a little better with its BSD heritage, but it too isn't tooo hard to smash into. But major servers don't run on OSX.
They run on Linux.
They run on open-source software that has an entire world's worth of security experts and security theorists probing into its every chess-move.
There will always be holes.
It's just... there might not be all that many of them, in the end.