That Pew study you cited is from 2012. It's an interesting read, for sure, but do you have any more recent studies? It seems that some factors that dampen economic mobility have been worsening since then[1] and the wealth gap has grown significantly since then, especially between the top 5% and the rest of us[2]
[1] https://www.pewtrusts.org/en/research-and-analysis/reports/2... [2]https://www.pewsocialtrends.org/2020/01/09/trends-in-income-...