There really is comparatively little reward for shooting for the moon though – the fragmented stock markets don't provide great exit opportunities, so less money goes into funding ambitious companies. Then, scaling throughout all of Europe is notably hard, with dozens of languages, cultures, and legal frameworks to navigate. Some of these cultures are more risk-averse, and that's not easy to change. Not to mention English being the _lingua franca_ of business and tech.
I would love Europe to reach the States' level of tech strength, but these are all really hard problems.