Waiting tables seemed to be more of a female majority thing across much of the US than it is nowadays. [Beyond the US cities, it's become much more of an equal balance in that role than used to be the case.]

The grunt lawyers doing the work in North America and Europe has gone in the other direction; and of the work which I see, it is now much more often done by female lawyers . 20 years ago, the majority of the same kind of legal work was done by males. While the top ranks of the legal world are still very much overwhelmingly male-majority, it's not rare for me to notice that these very same senior lawyers in the private sector and even in government seem to either prefer having the work done by female lawyers or are having a harder time finding equally-qualified male lawyers of a comparable age when it comes to recruiting.

Across the board, workers definitely jump around more often than used to be the case. And so it shouldn't be a surprise that in an industry where the jobs are considered less desirable due to working hours, compensation packages, customer demeanor, fickle management, and firms that have a higher than usual chance of folding (for financial reasons or even on a whim), that people who can leave the industry do so and don't look back when they find something better. And those with greater mobility will use it, while those will less mobility will be the proverbial adult child living in mamma's basement hooked to video games. Maybe mamma will get the son out to work at some of the neighboring restaurants from time to time, but the daughter has probably already moved on and won't want to look back.