Another aspect of the absent tech boom in Europe is the structure of the public markets, they're basically bullshit compared to what happens in the US.

In the case of growth companies, it's definitely not a talent thing, the American financial system has a well developed pipeline for growing ideas and providing endless access to capital. Europe simply doesn't have that. We don't even have consolidated pricing for our stock markets, even after many decades under the EU, something the US has had since 1976. It's a joke, and no surprise all eyes are on and money flows into the US for speculative investment