Yes that is what OP is saying and OP is correct. If you are young, talented and you have a crazy idea that might just work and if you are given the opportunity then you go to the US every-time.

Why? Because it makes sense. Why stay in Berlin or Paris where you can make 50K to 70K euros a year at most and pay close to 40% or 50% in taxes when you can make double or triple that in the US or better yet, start your own company there and then expand in Europe after building it knowing that if you eventually sell it, you get to keep a lot of the sale price.

Talented people don't work for nothing. Motivated and ambitious people don't work for nothing.

If Europe wants to see it's own tech giants emerge, then it's needs to compensate founders and employees well. That's as simple as it is.

Unfortunately it's just not the case at the moment and until that changes, the most ambitious Europeans will continue leaving and building companies on the other side of the Atlantic.