I see alot of startups, in different forums ie: reddit, producthunt, etc; that have a model like Uber. For instance, Uber for breakfast, etc. It's quite shocking that some people providing X as a service forget into account the demographics of where they are starting. Imagine if there was a startup exactly like Uber and started in Alaska, would it really be successful?
So, in addition to what you said, a startup may also not work if it doesn't start (or become successful) in a city like San Francisco/ New York
So, in addition to what you said, a startup may also not work if it doesn't start (or become successful) in a city like San Francisco/ New York