After years of working in various parts of Europe, I think it distills down to this. Sufficient talent, desire, and capital exists in Europe -- it is missing no ingredients -- but society there pervasively and subtly undermines anyone who dreams of attempting something really bold. It is a shame.
Not really. My bet is on the abundance of capital (hello global reserve currency) combined with excellent universities and a cultural willingness to take risks and do bold things. People who need a safety net, such as food stamps or housing assistance, are rarely the people who start big companies. They're usually too caught up in just trying to survive day-to-day.
Hey, the Swiss evolved the cuckoo clock into a wristwatch... nope, even this innovation was by two Polish and Czech immigrants.
Despite that quote being mostly wrong [0][1], a safety net might account for some idleness. But there's more. You might find a local variation of the Law of Jante [2], for example.
0 - https://en.wikipedia.org/wiki/Swiss_mercenaries
1 - https://en.wikipedia.org/wiki/Cuckoo_clock#First_modern_cuck...
Sometimes I wonder whether one of the factors that makes US the mecca of technology is the lack of safety net there (compared to Europe).