High skilled workers in Sweden and Germany and severely underpaid compared to their US counterparts? So either they suddenly become much more productive after m

High skilled workers in Sweden and Germany and severely underpaid compared to their US counterparts? So either they suddenly become much more productive after moving the US, they are subsidizing their less skilled colleagues or most of that surplus is going to their employers instead? Probably a bit of each depending on the location/sector/etc.. However Sweden in particular has one of the highest levels of wealth inequality in the word (even a bit higher than the US)...