> because if these were truly easy jobs someone would have figured that out and won by hiring cheap developers with non-traditional backgrounds.

This is literally what is happening at many companies, quite often. I know so many female developers who have, in the past, said things like "Oh, I'd never work at Uber". And because of this, Uber has to pay their engineers a lot more money, because they can't attract any female employees.

Skiping on diversity initiatives is not just immoral, it is dumb. And you will lose money because of it.