The history you discuss (good job) is consistent with my understanding of those events. However it seems a bit of an overstatement to allege conspiracy regarding men moving into software production and forcing women out.
Men have always aspired to higher earning professions and trades. There was no programmer deficit initially in the nascent computer industry. Salaries were therefore limited in the initially slow growing industry. Men didn’t wish to compete in that low wage atmosphere.
With the maturation, and near exponential growth, of the computer industries and coincident increase in salaries and benefits there evolved new demand for higher paid programmers. Men noticed the opportunities and naturally moved into software development. Women had equal opportunity in the field, but were soon outnumbered by men seeking better pay.
If we look at the trajectory of gender numbers in university, we find steady decrease of the male to female ratio. Many more females now attend universities, and colleges than males. Still men outnumber women in the sciences, especially programming. This discordance is not a conspiracy, it simply reflects that men seek more lucrative careers.
We see this same event in reverse in previously communist Russia. Early on, after the revolution, Medicine paid well, but as socialism exerted it’s pressures, wages earned by doctors diminished, and male students responded to those pressures by shunning Medicine, entering the hard sciences, and law/political sciences (facilitating government jobs that paid well). Simultaneously women entered Medicine, a step up for them economically, but not as remunerative as previously. Women outnumbered men in Medicine eventually, except in high paying specialties.