High income women end up marrying their college partners. A lot of these gals meet their partner in college and never separate. That's how I see it for the majority of women I've known in SV. Exceptions being those who didn't go to college and weren't going to pursue a high income profession (or were but bailed on it) but inevitably chose it later.
It's hard to meet these women because they are few in percentage and like most women - they don't go out to meet men. They might use dating apps, they might date a coworker, they might date someone in their social circle. So, you're not likely gonna meet them organically at a hobby or anything.
It's a rough world for men out there.