You are ignoring that choices are not made in a vacuum. From starting pre school my youngest dd has constantly come out with girls do this boys do that. I feel like I'm constantly fighting an uphill battle against gender expectations to enable her to reach her potential and this is in an environment where she is surrounded by strong female role models working in male dominated industries.
I'm not ignoring it at all, I've posted a review showing that even highly ambitious women doing MBAs at Harvard behaved in a gendered way and you would expect that they are some of the most ambitious women around.
What I am saying is that in aggregate people are paid equally now under 40 and this means male and female occupations are largely equally paid where all other factors are equal, ie age and education and skills required, and seniority.
Company level gender pay gap reporting distorts this by creating a perception that women are underpaid for the same jobs in a company, which is incorrect as it's usually that there aren't many men at all in that occupation to even appear in the company's data.
I suspect far more men work in small busineses which is why we're getting this lopsided view on corporate gender pay gaps.
There is nothing wrong with women choosing their preferred careers. It's a good thing. Far better to spend your life working in a career or job you choose.
The gap will be closed by women who choose to go into management and get there in their 50s.
I had two kids in my 30s. I'm paid the same as the men in my age group now at 60 doing the same job in the same sector. It would be discrimination if I wasn't. I had four years off and muddled through with childcare and shared care with my partner and working flexibly. It's not a permanent detriment any more if you don't want it to be and get back in the promotion game in your later life. A few years out or part time means little after 30 years. Companies are bending over backwards to get equal representation and today's 40 somethings are the target for this.
The route to megabucks in banking is unbelievably competitive and only the most determined get there. And it's pretty nasty on the way. Really very nasty.
There's nothing wrong with not wanting to do that and I doubt really aggressive occupations will ever be fully 50 50 for that reason.
But most middle and senior managers will achieve parity and close the gap before 2030. Your child rearing years are not your whole working life.