Is There a Connection Between Bike Infrastructure and Affluent Communities?

In San Diego, we've built a lot of bike lanes, but only connecting privileged communities to places where people do high-income work. And it seems like increasingly, like, riding your bike safely is a privilege that's only afforded to a certain group of people. Is that something that's broader than just in my town? I think you see this in the San Francisco Bay Area also did research in Philadelphia and Detroit and Austin as well.