> Is it just the cost of infrastructure over large distances In the US there are over 50 metro areas with more than 1 million inhabitants, over 100 with 500k.

> Is it just the cost of infrastructure over large distances In the US there are over 50 metro areas with more than 1 million inhabitants, over 100 with 500k. Granted that they will be more sparsely populated than european metro areas but I'm just not too sure that the large distances are an issue here at all.