What if...
...it just so happens that some of these companies pay salary on a sliding scale based on experience and/or performance? Obviously pay discrepancies based purely on gender are wrong; however, if some men are getting paid more than their female colleagues purely because they're doing a better job, wouldn't it often be better to keep them and safeguard the smooth running of IT systems rather than cutting employment costs and hoping the cheaper employee can handle it?
Kate Craig-Wood needs to think before making blanket statements that don't take into consideration all possible scenarios at different companies.