There are problems with Google, and I don't disagree with the headline, but I don't see Siri as the disruption. Google already has voice search, and I am pretty sure they are working hard on getting it up to the user friendliness of Siri. They will 'catch up'.

The real question has absolutely nothing to do with Siri and everything to do with innovation in general. As long as Google continues to innovate they will be on top. Historically all companies eventually get too large and gunk up their own 'innovation machinery'. It's only a matter of time. Same goes for Apple.