Well the most important factor of economic mobility has historically been women marrying up. So you might be on to something - it seems doubtful that wives who were able to marry up work that much harder than other wives.
> The major correlates with high economic mobility Chetty identifies are racial segregation, income inequality, school quality, family structure and social capital.
> The major correlates with high economic mobility Chetty identifies are racial segregation, income inequality, school quality, family structure and social capital.
https://www.huduser.gov/portal/pdredge/pdr_edge_featd_articl...