If your diversity initiative isn't providing all the different types of diversity you're looking for, you either expand it or start new initiatives.
It's worthwhile to push your company (or university)'s race balance closer into alignment with the overall population's, and it's also worthwhile to try and strike a reasonable gender balance, in hopes that you're not locking people out of opportunities based on race or gender. It's also worthwhile to make sure there are opportunities for people from lower-income backgrounds.
The fact that some people are "losers" in this society (by modern capitalism's nature as a contest to see who can accumulate the most wealth at the expense of others) doesn't mean that diversity initiatives have to be a contest. You can run diversity initiatives with the goal of helping people who are otherwise excluded, and one of those can absolutely be aimed at helping people from low-income backgrounds.
Likewise, once someone is in the workplace, they might still need help. Maybe your standard pay scale isn't enough for a single parent with 4 kids, because he doesn't have affordable access to childcare services for his kids. Maybe one of your employees is wheelchair-bound and you could make it a lot easier for her to stay at your company if you adjusted the office floor-plan so it's easier for her to navigate.
Laws and regulations are (at least sometimes) built with this in mind, but the results will be way better if you tackle these issues directly instead of getting forced to do it by government decree.