He's also talking about a field being "conquered" by quoting stats on graduating students. I would guess the split in law is less for Judges, in business for CEOs etc. so if this process is happening, then it's still in progress in all of those fields, and I'd guess you could look into each one in turn and find that some started earlier and progressed faster than others. Be interesting to see what the common points for the laggards are. I don't see any great case being made for computing to be an outlier that's different in kind rather than simply degree.

I googled some stats on judges, I was correct that it lags student numbers (I say "lags" on the optimistic assumption that those students will eventually go on to be judges in similar quantities. Possibly a judge will release a 10 page manifesto about how the marxist left is forcing women to be judges when they're rather be baking cakes though, so maybe we shouldn't count our chickens until they've hatched):

http://gavelgap.org/

in particular this infographic which points out that women have been 50% of the students for 2 decades now, but still only 36% of the profession, and only 30% of state judges.

http://gavelgap.org/assets/infographic-3-c78b5c8147005783a23...

So it seems my use of "lags" was over optimistic and student numbers aren't a great predictor, even after two decades.