Actually, the biggest difference might be public transport: as long as they live in a decent city, you can give people transit passes and they can start to visit doctors, apply for jobs etc. like anyone else.
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.
Not really any more than the US, the vast majority of people live in cities, or in this triangle zone between Turku, Tampere, and Helsinki.