The excess money goes into assets that people need to survive/thrive. In SF/Bay Area a lot of it goes into land appreciation (housing prices). The end effect is rampant homelessness (did you know a full 1% of SF is homeless), delayed family formation, and an ever-growing state bill to subsidize landowners.

Excess isn't a problem, it's the distribution of the excess. Right now (in America) pretty much all of it goes to the top couple percent. The bottom ~40% of Americans have, by all practical measures, experienced a reduction in standard of living compared to 1980. Like, yes, they can afford more trivialities. TVs are cheap, particle-board furniture is cheap, and so on. But the actually important things like healthcare, education, and housing have moved further out of reach.

So yes, it's nice that my Anthropic friends can retire to work on, in one case, their fantasy novels. I'm very happy they can focus on something they love (and I look forward to reading their books). However, that much capital concentration leads to a hefty chunk of our (really rather rich) country struggling to service basic needs (like having a roof).