Powerful computers that are so cheap you can permanently purpose them to tuning on and off a single light-bulb are a bit of a game changer if you think about it.
I'm guessing the next raft of patent trolling will follow the form "household item but with a computer/wifi in it".
For TTS the say command has all voices available.
[1] http://msdn.microsoft.com/en-us/library/ee125663%28v=vs.85%2...
But Wolfram alpha has a lot of things missing, and lots of the things it does are way longer than I want to hear a computer read to me.
Maybe if the author combined this with our TLDR api, and our Sentence parsring API, and our Fact search API...
(yes if you use all of our API's you can build this in about and hour and have it do a lot more) hint hint
And yes I do better than wolfram alpha.
I think a better "vision" is an open voice input engine that then connects, or even bridges, other systems via APIs.
I particularly like the idea of a service such as Zapier bridging a infinite universe of APIs to connect things together -- "computer request Uber black car when I receive a Skype call from Jim."
An input engine could create a marketplace of APIs. Commercial services, such as Uber, could profitably offer their APIs for free. Other services without a specific product may run their APIs on a cost per use basis. A mass market cost-per-use API could charge a few pennies per inquiry but still be very profitable.
Perhaps what I am describing could represent the demise of the search engine as we know it.