It's insane to compare a country like the U.S. to a country like Belgium that is more than ten times more dense. If you look at the northeastern states, which have densities closer to Europe (500-1000 per square mile versus 90 per square mile which is the U.S. average), average speeds range from 30-38 megabits, well ahead of the U.K. and Germany which are comparable dense, and on par with countries like Belgium, etc.