Let's see.  If I have a job in NYC and I work on my startup on the side, then when I try to leave my job once my startup is making progress I discover that my employer owns everything I did for my startup and I'm out in the cold.<p>Do the same thing in California and state law makes the startup I've been working on in my time with my money, mine.<p>To me this simple fact gives California a <i>huge</i> advantage in maintaining a startup culture.