I think your numbers are off by about a factor of 2 (underestimating). You can see the salaries for the UoC system at https://ucannualwage.ucop.edu/wage/ https

I think your numbers are off by about a factor of 2 (underestimating). You can see the salaries for the UoC system at https://ucannualwage.ucop.edu/wage/ https://ucannualwage.ucop.edu/wage/. Note that most of the professorial salaries are labeled AY which means they are probably making 30% more annually. Salaries at private schools are even higher. Silicon Valley is not going to lure a "big name" away from a tenured job for south of a half-million a year.