Social Mobility in Europe

https://sh.itjust.works/post/5785887

Social Mobility in Europe - sh.itjust.works

Source [https://landgeist.com/2023/09/23/social-mobility-in-europe/]

It is sad that it takes so many generations.
I’m interested in why it takes any at all in Scandinavia, since the bottom 10% in Scandinavian countries have the same education and equal opportunity as the top 10%, and social welfare is enough to live on, so kids aren’t forced to work part-time either. School materials and university is free too, so it is not like the bottom 10% cannot afford or don’t have time for education.
It’s time to mean income, not stable living wage.
Coming from a poor background shouldn’t hinder you from reaching mean any more than anyone else though. Does it have to do with then being less inclined to ask for a raise then? Or is it perhaps an issue with poor parenting, causing less willingness to work hard in school?
Or could it be people already at the mean income look down on the poor and tend to choose someone from the mean income and above over someone below when the two people are otherwise equal?