It's such a feedback loop though. Give promising european talent the same amount of cash and it's likely they'd do as well. Sometimes money is the main constraining factor (especially ML related things).
I don't think so. The mentality in most of Europe is completely different. Most people don't strive for the extreme levels of success of companies like Google, Tesla or Apple, but are happy to merely get rich. Also, most gain beyond "merely rich" tends to be absorbed by governments here, not the founders. That severely hinders rapid growth.
The few people with a similar mindset to Americans either migrate there or end up selling to some American company before scaling.