People are not onions. People learn. Even if companies will lower the bar on entry for women they will be just forced to educate their employees more on the job. For people just out of school it might seem strange but jobs are where you get most of you useful education.

Is it additional burden on the companies? Sure. But we are fine with taxing companies and placing on them the burden of workers protections and environmental protection. This is just another protection. Protection against reinforcing inequality. I'm not saying it's good but additional education for less educated and more equality in society doesn't seem bad if the only cost is money from the richest corporations especially the ones that get most of their money from advertising which nowaydays is less about informing customer about your product existance and all about everything else.