Some just get caught. And even in some of those instances, it seems corporations decide it is in their best interests financially to simply turn their eyes rather than to address the situation. Women really cannot count on employers to take care of them. Do not become paralyzed looking for the correct answers. Be prepared to be stereotyped and possibly pigeonholed once you enter a traditional work setting.
Employers tend to categorize and label workers.
Do not think it is solely your responsibility to fix the workplace's gender inequities. Some seem to readily relegate this imposing task to women.