Great, but if it doesn't translate into quality of life metrics for a large portion of the population, you're still not there. US Tech stocks is in large part

Great, but if it doesn't translate into quality of life metrics for a large portion of the population, you're still not there. US Tech stocks is in large part a matter of highly-international companies with international revenues, international jobs, flowing to international shareholders, who trade their shares on various worldwide exchanges in an international marketplace, shares of a company which happens to have a US headquarter. That doesn't at all mean that only the US benefits from this arrangement, or that these tech stocks make Americans uniquely rich, or created massive employment among Americans, or create tax revenues uniquely in the US etc etc. The reality is much more nuanced. The average American or European isn't directly that much affected by the top tech companies existing in the US or Europe. The public company markets also say nothing about the private markets. Europe is known to have a large SME base, large family companies, old state-owned enterprises which exist as semi public/private. You can't compare it to a country which has optimized for public companies on that single metric.