All these "diverse" people are gonna rub the mostly middle upper class decision makers the wrong way unless they specifically work to fit in. You can leave the trailer park but the trailer park will never leave you. Also, once you've "made it" your needs change too. You might still be trailer trash but you're trailer trash with money which is rare.

Working in an environment where there is nobody like you and you have to always be on your toes for culture conflict is work! These people already get more than enough time outside of their comfort zone and most are more than happy to cash their paycheck because from their frame of reference that's more than enough "success". They don't feel the need to preach about what "their people" are like because they're outliers at work and they're outliers when they go home and that doesn't exactly make one feel authoritative on the topic.

I'm not sure what I'm saying here but it's not as simple as "listen to the diverse people" or "more focus groups".