Merely not driving away minority groups isn't enough to fix the imbalances in representation. People don't avoid things because of future negative experiences, they avoid things because they expect to get negative experiences there. Like, if police magically started treating African Americans like they ought to overnight, there's a lot of built-up fear that would still have the African American community avoid interactions with police.

It's not just a behavior problem, but also a marketing problem. You can't fix a marketing problem without, you know, marketing.