How many large tech. companies has Europe produced ?
Why would (or even: could) anyone start/build a cutting-edge tech. company in Europe given the hell that labor laws are over there ?
Labor laws in Europe are a giant hindrance to economic growth.
People in most European countries have made a political choice: safety and stagnation over wealth and growth.
That's their choice, fine, they're free to do as they please in their own house.
But when you make a choice, you can't ignore the consequences of these choices.
That's why "not in the US":
Different political choices, betting on growth, agility, innovation, running fast, and yes -- ooooh, what a terrible thing -- taking risks, and among others that employment may come and go because the world is not a static place.