How easy is to get a dentist or masseuse, with a few hour notice?!
> In contrast, other places are just poor, and you "cannot" find as large a variety of lots of goods and services
I think you need reality check on "poor". The place with the widest selection of services and products (for example types of meat in supermarket, or hand made tailored clothes) is Bangkok in Thailand. Places like SF just do not have enough people to provide all those services.