US is very much pumped up by their FAANG stocks. It is not very representative of wealth of the country in general. If one were to take other things in into account quality of life, time spent with family/friends, is US really better off?
FAANG market cap: US$7T
USA GDP: US$20T
Getting back to FAANG:
Amazon: $386bn
Apple: $274bn
Google: $182bn
Netflix: $25bn
Facebook: $85bn
So that would bring the numbers up to $925bn.
Now, a lot of this revenue is global, so the US stuff is probably 50% or less. However, a big chunk of this global revenue is the thing that allows US salaries to be so high. Also, if we were in normal times, these companies would repatriate their profits and be taxed in the US, plus these profits would be reinvested in the company or invested in the US. So I'd count the US "contribution" not as strictly half ($462bn) but more likely closer to $600bn.
Also, FAANG is a catchy name but it's not a good economic representation. Netflix is big-ish, it's a household name, but it's much smaller than the others. There are also some big companies missing from it:
Microsft: $143bn
Oracle: $39bn
Adobe: $11bn
Salesforce: $17bn
IBM: $73bn
Dell: $92bn
Intel: $71bn
HP: $58bn
Cisco: $51bn
So that's another $546, using the same "formula" from above, probably another $350bn "contribution" for the US.
And that's just the absolute A tier plus the B+ tier. If we start including B (Uber, big but debt ridden; ServiceNow, etc.) and C tiers (ever heard of Axway?), I imagine we get to $1500-2000bn easily, especially since I forgot to add numbers for some big B+ tier companies up there (Broadcomm, Qualcomm, etc.).
Personally I'd suspect that all these small companies combined probably make more than the big companies combined.