In my world, most multilingual speakers are children of immigrant families, and that transcends socio-economic boundaries. Plenty of immigrants were already wealthy before coming to the SF Bay Area, where we import highly educated, specialized workers. On the other hand, we also import physical laborers who are also generally multilingual but not in the same social class.
Some of these immigrants are very well supported with a strong social network, while others struggle with isolation.
Some of these immigrants are very well supported with a strong social network, while others struggle with isolation.