But you still have to walk to the device - any kind of a significant distance in anything but a completely silent room turns speech recognition into a game of b

But you still have to walk to the device - any kind of a significant distance in anything but a completely silent room turns speech recognition into a game of broken telephone. And you most certainly aren't buying something as elaborate as a doll house through voice. Voice is best suited for things you routinely re-buy, such as coffee beans, cat food, etc. And then there are devices like watches and phones that are always on you and walking to a device is not a concern.