This is a bit of a myth, most countries in Europe have better social mobility then the US, where people of different social classes are quite segregated. (Though as always, there is a lot of variation between countries.)

> In Europe, you have ultrawealthy families that have been wealthy for centuries - from the actual nobility days.

> The US doesn’t really have that at all

Of course, my local pub is older than your country, generational wealth isn't a thing in the US, as is generational anything

What you have is multi billionaires buying their way into politics and getting in the government while no one ever voted for them

This is such a weird stereotype. The US was declared in 1776. Obviously it has generational wealth. Unless you think everybody lives to be 300 years old.