Neither datacenters nor chip manufacturing employ a whole lot of people. But I think you're looking at it wrong. Jobs come from people with money wanting to pay for jobs. That's not going to change.
The jobs of the future may be that you're a court jester for Larry Ellison, or that you do something else that's fundamentally pointless but happens to be something that a person with money wants. Companion, entertainment, errands. Now, that may sound dystopian, but on some level, so are most white collar jobs today. Microsoft employs 200k people. How many of these are directly involved in shipping money-making products - five percent? Ten? The rest is there essentially for the self-sustaining bureaucracy itself. And there's no reason for that bureaucracy to exist except the whims of people with money and power - delegation, empire-building, pet projects, etc.