The thing is, you find that as nations get more free and accepting of men and women to do what they please, gender parity isn't something that develops. In fact, some careers stratify even more. This isn't a bad thing, this is because men and women tend to have different interests. When things are fair and equal and you can pursue the career you wish, what they wish on average is different. That doesn't mean there aren't outliers, of course, but that you will find some careers are "gendered" in that one gender prefers them more than the other.
We shouldn't try and stop that. We should just make sure that the reason someone chooses a career is because they want it, not because they have been prevented from entering another field and this is their second choice, and also not because they were pressured in to it. We want people to be truly free to do what they desire, without artificial barriers to that.