Even if you "retrain" your quality of life will go down because the market value of your life will go down as automation and AI improve, unless you're a member of the capitalist class. Which, if you need to work for a living at all, you aren't. No matter what you do unless you're personally wealthy your quality of life will go down. That's just what an efficient market does to most people, and AI is going to make the market brutally efficient.
That’s been how humanity has always worked, human migration is probably the largest single driver of social change in human history
Millions of people migrate every year today, I’m not sure what you think the alternative is
> Millions of people migrate every year today
A just society that doesn't force them to.