self-contained businesses and they don't need to be in a dense, urban center anymore and they get to alameda or solano county. if you are already there, you are less likely to move again. that does not explain why we have such a high-risk move out rate. frankly, a lot of places are more expensive than san francisco. we do not seem to have those non-cost factors that hold businesses here that they do in santa clara county whereby you have businesses in that county with multiple thousands of employees in one place in that county even though it is a very expensive place. there is something about san francisco -- maybe it's just a stage of evolution of our technology industry and we are in a state of transition, but we do not have those attractiveness factors. we are great at attracting talented people and grated having talented people start companies, but once they get to the size of major enterprises, we are not as good as keeping them here. that goes back to some of the major infrastructure backers as well as other companies. president chiu: i would like to explore what other things we can do to retain the co