Probably, Google itself doesn't know where it's headed, and its leadership believes that this "throw stuff against the wall and see what sticks" model is a far better way to pick winners and losers than to make bets internally. They're probably correct about this.
I guess I shouldn't complain. Google has so much stuff going, that there's always something to peer into. Plus, its model of releasing anything and everything provides us all with universal, and usually free, access to the fruits of its research.