Tech has been bending over backwards for quite a while, but to no avail.
In contrast, marketing, law, medicine etc used to be very male dominated a few decades ago, made almost no attempt at welcoming women, and still got many of them.
It's almost as if women make their own choices, and it's not really down to how welcoming specific fields are? It's almost as if women have preferences of their own? Who would have guessed?
See https://slatestarcodex.com/2017/08/01/gender-imbalances-are-... and https://slatestarcodex.com/2017/08/07/contra-grant-on-exagge...