You can usually spot the negative stigma and diffuse or discard it when you realize the source of it. The industry is filled with males because that's who was able to study these careers 30 years ago and before. There aren't very many, but there are significant and impressive women in the field. You mentioned Bill Gates, and Steve Jobs, both of whom started out as the guys in the computer lab. up until very recently, there were very few women in the lab, and back then, the male managers of those women (even older guys) did not find it valuable to promote those women to leadership positions as they are doing today. Its a reality that there was a male chauvinist hierarchy in the tech industry 30 years ago, and also that women were staying home to care for families, or taking jobs that were flexible so they could care for families. But that has subsided, and you will start seeing a lot more of those big important roles be lead by women as the old fashioned ideas retire away. The CEO of IBM is a woman, and Yahoo, and .... many more! I suggest you read this article, and join this mentoring group to see just how many women in IT are leading. I also happened to read the last link with the article that really justifies why STEM is so critical to the future of our economy!
http://energy.gov/diversity/services/coordinating-council-women-and-girls https://www.whitehouse.gov/administration/eop/ostp/women https://www.linkedin.com/pulse/stem-education-future-us-economy-gary-shapiro?trk=hp-feed-article-title-hpm