France : top 10% own 60%, Bottom 50% own 5%
  USA : top 10% own 72%, Bottom 50% own 2%
  Sweden : top 10% own 60%, Bottom 50% own 5%

Source : https://wid.world/country/france/

I don't find these numbers particularly indicative of a massive difference between the EU and the US.

I dont have the exact stats under the hand but if you look in the CAC40. There is not a single innovative company founded independently in the last 40 years. All offshoots at best, at worst companies literally founded between 1890-1920, similar in Germany, Spain and Italy. It's kinda crazy ngl.

Indeed. However this is more reflective of a problem of private capital and attractivity of EU stock markets rather than the innovation horsepower.

Criteo, Datadog, Snowflake and the likes are European-based ventures but listed on the NASDAQ.