When I read stories like this, my only thought is how little San Francisco resembles any other city in the world. If you are designing your [next big thing] to be successful in SF, it won't be successful anywhere else. If you are designing it to be successful in the real world, it won't be successful in SF.
No, people outside SF are not going to pay $15 delivery on an $18 salad in order to receive it an hour late. No amount of venture capital thrown away will change this.