I think you're right that this technology, if not any specific implementation, has the potential to destabilize the world as we know it.

I've already had friends losing work to these. I had graphic designers tell me they just don't get asked to do commissions hardly at all anymore. I have a friend who did dictation for a law office, and that dried up all at once. She had to go back to teaching.

It's just the edges of things, today, but it doesn't have to get much better to take your order at McDonalds, answer phones, help you schedule classes, etc ...

It also doesn't take anywhere near 100% market saturation to destabilize things. The unemployment rate peaked at just over 25% during the great depression.