> It's not sustainable to sell a product that most people only buy because they were trying to buy something else (or because they're forced to for societal reasons).
Like a car in the United States, outside of perhaps five metro areas?
It is for societal reasons, in that some societies devote significant resources to ensure that people can "get around" without private vehicles, and others do not. It is also for societal reasons in that the distribution of, for example, grocery stores, dictates that people doing desired/necessary work in rural areas generally need to travel significant distances in order to obtain food.
Like a car in the United States, outside of perhaps five metro areas?