Did you read the article? In fact it claims that part of the reason for the lack of good public transport in the US is due to the extreme fragmentation present

Did you read the article? In fact it claims that part of the reason for the lack of good public transport in the US is due to the extreme fragmentation present in some counties. Cooperation between neighboring cities is lacking, making planning and securing sensible infrastructure projects a much harder task compared to a ‘monolithic’ city.