Just as so many of the wealthy in the Bay Area, many of my cousins and others whose families wealth predated the arrival of tech, seemed to be ready for a change, and I think some of the negative issues going up there helped them make their decisions.
Since they can live anywhere they wish, and still keep their other properties, some of which they are renting to the techies, they have been motivated to make some changes in their lives for various reasons, none of which have anything to do with finances, and they are very happy with their choices, so, all is well. They especially love now having homes by our beautiful beaches, and that was another big determining factor vs. staying in SFO.