Another thing I just thought of is that for a lot of women, they're the one who leave or step back from employment because of economic math: They make less than

Another thing I just thought of is that for a lot of women, they're the one who leave or step back from employment because of economic math: They make less than the cost of childcare and/or the benefit of the second income is marginal and the women earn less so the logical thing is for them to quit. I'd expect that women in tech earn are more likely to earn enough to be able to take the costs on the chin + are more likely to be the higher earner in a heterosexual couple (unless it turns out bi and het women in tech mostly marry men in tech).