AI tools, including Google's Duplex, will benefit the bottom ~90% of the planet radically more than it will benefit the wealthy. That has been true of nearly all technology from the past few hundred years at least.

The wealthy will largely continue employing humans to do tasks for them, because they can. It will be just another form of luxury / status. An AI assistant will be considered beneath their class. The technology will be nearly universal and extremely inexpensive, two things rich people dislike as it pertains to signaling their status.

I don't think so. 48% of people have access to the internet, 41% in developing countries. All these people won't be able to benefit from this at all. That doesn't even count the ones that have dialup or comparable speeds (like on Cuba) where transferring anything beyond a couple hundred kilobyte is unbearable.

The wealthy will employ AI the moment it can do the same tasks as a human, unlike humans the AI is cheap, doesn't take time of work, always available, never tired or grumpy, etc. The maintenance work of having an AI worker vs a human worker is just way lower.

The moment a corporation like McDonalds can replace the entire staff with robots without having a dip in efficiency they will do that. 24/7 operation would be linearly more costly to 9-5 weekday operation.

The wealthy will stop employing humans to do tasks for them the second that AI can do those tasks better, or with less effort.

Then a few seconds after that the Singularity starts.