Citation needed, specifically regarding your use of the term "a lot".

Sure enough, if you take the small percentage of extreme tech talent or very entrepreneurial employees, many in that group might consider taking their business to the US.

But how much is that really? 1%? 5%? Can't be much more. So, 95-99% don't...hardly a brain drain.

The other thing Americans can't seem to comprehend is that not everybody is a dollar-chaser. For the typical European, if they have a decent quality of life and some reasonable disposable income, they are satisfied.

Bread and games as they say.