"Imagine that general background social conditions in the United States are such that women will be disadvantaged in any male-run institution that doesn't make a specific and deliberate effort to lean against that disadvantage."Imagining is fun! What else should we imagine?
To imagine that Walmart discriminates against female employees is to imagine that it discriminates in favor of male employees, which is to imagine that Walmart, evidently a Big Softie famous for leaving money on the table, overpays for male employees.
But I don't have a big enough imagination to imagine that.