> Women are currently viewed as intrinsically a good thing to run a company

Why would anyone think that having significantly less than 50% women requires no investigation if they didn't think women are intrinsically bad for a company? The problem isn't a skew in favour of women. If you expect 50-50 and get 30-70, obviously that's something to look into, but you're complaining there aren't people trying to increase the skew further. It's like complaining about the lack of organisations explicitly calling to raise the growth in average temperature as a counterweight to all those who want to lower it, or about the lack of charities promoting deforestation.