For whatever reason (and while it pains me to generalize), the high-risk, high-reward jobs are all almost all men. Any woman who feels a calling should of course go for it, and no one should stand in that person's way, but I wouldn't ever expect, say, a 50/50 perfect proportion of gender participants at some future date (as this article indicates, this is a dysfunctional expectation)
Back when bitcoin was only $10 a pop, a bunch of guys in our programming shop wanted to get involved. 100% of their wives nixed it. 100%. I was the only single guy, so I put in some money... Crazy at the time? Perhaps. Crazy now? Not with 20/20 hindsight...