Outside of SF, life goes on as it always has. The major crime issues are (a) catalytic converter theft which costs the victim thousands and (b) car window breaks to grab any visible bags because too many techs leave their laptops in a visible bag.
Housing prices have always been rising, traffic is always getting worse. It's annoying, but not new. Companies have always been leaving and new places are always touted as the new "Silicon XYZ." The Silicon Glen. The Silicon Prairie. Silicon Forest.
I'm old. All this has happened before. All this will happen again.