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.