Then there must be a biological difference between women from different cultures that's also contributing, because I've only observed this "lack of interest" in Anglosphere women.
From my experience, for instance, Indian women have no such problem and are in fact strongly represented within the IT profession and I've worked alongside several of them. Women in my country of birth (Greece) have no such problem and about two fifths of the Greek programmers I know are women. In the British universities I studied and the British workplaces I worked in the last few years, on the other hand, women are about a tenth of all programmers I've met.
So because it's a bit absurd for Anglo women to be so specifically genetically programmed to stay out of the IT professions, I'm going to assume it's not a genetic, but a cultural thing going on.
Btw, I've discussed this with a female Indian software engineer I was working with and she explained that in India, working in IT is seen as an office job and so more suited to women. Traditional gender roles, innit.