Stanford has one of the best, most successful athletic departments, 36 successful teams. Top notch education. Yet it has to be one of the most far-flung outliers travel-wise right now having joined the ACC. Of course it makes no sense. Maybe the opportunity for the education outweighs the additional travel for Stanford. Perhaps less so for Berkeley as a public U.
California has so many great schools that it would seem serious student-athletes might prefer to stay home and play more locally rather than travel. The PAC 12 was a great conference but having to go to the east coast all the time is going to be tough. In the big picture I don't think travel is a major issue but it might be for these Cali schools. At UConn, I could see the Big 12 being a selling point. More events in warmer and dryer climates, Orlando, Phoenix, Tucson, Houston. When I was at UConn the hockey team had trips to Alaska and they were pretty excited about that.