My post was arguing that the "everything else" is more attractive in the US.
Consider a post doc or junior professor who do not know if they will ever get a tenure position or if you even want to remain in academia their whole life. Their plan B is to get an job in industry. Now consider having access to the whole US job market vs. having access to one tiny EU country. Not to mention that when you bias for cutting edge industry R&D there are industries which only have a significant presence in the US.
People value not having to step over the homeless to get to work, lower crime, free healthcare, no risk of deportation for having a view on Palestine etc etc
> Consider a post doc or junior professor who do not know if they will ever get a tenure position or if you even want to remain in academia their whole life
Now assume they are not American citizens, and travel internationally and re-evaluate the whole proposition that "everything else" is better.
For people who value money over everything else