Nominal global financial wealth is about $350 trillion. If you include real estate global nominal wealth is about $600 trillion.

A good portion of that[1] is what alot of people might call fake money--valuation inflation, etc. And global wealth, even just financial wealth, isn't quite as mobile across borders as one might assume. So marshalling a trillion dollars stateside is gonna make at least some moderate waves. Still, in the grand, global scheme of things a trillion dollars is a rounding error. A trillion isn't what it used to be, and there's trillions to be had even without any realized productivity gains from AI.

[1] I'm no financial analyst, but judging by the last few recessions and the overall trajectory over the past 30 years, I'd ballpark at most about 1/3 of that to go up in smoke if we had a severe downturn tomorrow. It's not all fake money. The whole world has industrialized over the past 30 years on a scale that is still unfathomable for most people today.