Exploiting diversity is crucial - our best successes as a species come not from confirmation, but from combining difference, but we hate it - we gravitate, nay hurtle towards that which is the same.
So there is endless "diversity training" - blah blah blah, we all smile and nod, but this problem resides deep in the unconscious, in our survival instincts.
We know this - and modern marketing techniques are getting better and better at understanding and accessing those bits.
What about a massive marketing campaign selling women? All colours, all sizes, all creeds. It has been building for a while, but often a little ham handed - we need to go bigger, more subtle - don't know what it looks like, but it sounds like fun.