Cause and effect is a difficult concept for the, uh, challenged. I might surmise many reason for businesses to expand to other states from California, as well as businesses moving from other states to California.
I know that South Beach, the eastern shore of San Francisco, is enjoying a renewal fueled by AT&T Park and an ever growing high tech/bio tech revolution. What once was light industrial is now a mecca for young, intelligent, educated twenty and thirty somethings. High rise offices, urban parks, bicycle and public transit friendly it seems as if each day a new building is under construction.
I know that Hunter's Point, an area known more for public housing and crime is under planning to develop a seaport for cruise ships, a new stadium to be shared by the 9ers and Raiders (possibly) and up-scale hotels, restaurants and housing.
One day Californian's may figure out that the R's who hold our legislature hostage with a NO on taxes of any kind are the anchor which prevents movement and progress. Laws requiring a 2/3 vote to raise taxes which provide public transportation, police and fire protection and the necessary infrastructure to support development die of attrition as the conservative block, a minority in the legislature put their own reelection before the state as a whole. No one likes taxes, but few like pot holes, and even less want to wait for a 911 call to be answered and help to be dispatched.