Yes and no.
Some systems already exist. Certain tools already exist in Windows 7 for example. But no one uses them, as the focus has never been on such broad usability.
That and the money. It costs a lot to get it running well.
A real life personal assistant can help to some extent. Though I'm still waiting for a neural net trained speech and screen recognition I can let run wild and just access anything I ask it to (though that could have some poor consequences :P ).
Biting the hand that feeds IT
