Earlier quoted context omitted.
US upward social mobility is among the worst in the world. US workers are stuck in a rat race that simply doesn't exist to the same extent in Europe.
I beg to differ. The fact is hard working immigrants in the US have a much higher chance of becoming successful than in Europe. Pretty much all the US tech companies are now run by immigrants of minority backgrounds while, for example, Eastern European and Turkish immigrants in Germany are still regarded as cleaners and kebab salesmen, with the only notable exception they can name being the Turkish CEO of BionTech.
Effectively the difference between a chance of 0.0000001% and 0.0% is not important…