Via what interface would people use the agents? Voice to text on a smartphone? That's clunky and slow and only works in quiet areas where you can talk freely. And mouse and keyboard is really not that hard. If anything was going to kill PCs, smartphones & tablets would have done it, but everyone I know still has at least a laptop. Overall I think getting people to trade in the freedom of having their own personalized devices for a remote agent is a much harder sell then you're making it out to be.

> Imagine picking up a new product that will take you weeks of practice to use at basic level

This does not work on developers. Their empathy fails them here - because they absolutely would try a new product that takes weeks of practise. They like (or at least tolerate) learning complex+cool new things, thats why they are developers...