I'm not sure what special skills VCs have that would make their contributions more useful and valuable than those of other contributors. They have a certain perspective around improving the startup business climate, but cities aren't built and operated to serve them in particular.
I'm not interested in litigating the merits of VCs, I was commenting positively and not normatively on the peculiarly small ratio of engaged financiers to obvious urban dysfunction in San Francisco.
I don't know the answer to my question. I just observe that it's a factor that sets San Fransisco apart from a lot of other cities. In my opinion it's worth investigating at least.