I would say that you'd be hard pressed to find a city of any moderate size where it was not possible. Some would be better than others, but it's possible nearly everywhere.
Sure they can. US cities are not uniform. For example Helsinki has roughly the population and metro density of Providence, Rhode Island. Finland may not have a New York or San Francisco, but that doesn't mean there's not good comparisons anywhere in the US.
I am not saying it can't, but I am saying many could turn out to be cultural towns rather than big cities like NYC or London.
And to the person who downvoted me: just so you know, I rarely care about this, but if you downvote on a wild guess, you need to double check your interpretation of "wild guess."
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