I would say that plain geography counts too. Most countries in europe and SE Asia, where penetration is the highest, are a fraction of the geographical size of the USA.
If I ran a country the size of New Jersey, obviously its much easier to wire that square mileage with fiber, as opposed to the whole USA.
The 3rd chart probably gives the fairest correlation of density vs penetration.
Those below the line are doing worse than average with Mexico being especially bad.
And those above the line are doing better than average with the Netherlands doing especially well.
Iceland for example is very high in the rankings. But they should be as the country with the densest population. More than 50% of the population live on 1.4% of the land. -- My BLOG .. .. Internet News .. .. My Web Page
That's statistics for you... you can always put some form of spin on it to make it look good or bad.
Countries like US/Australia/Canada are large in landmass, relatively low in population density, with the exception of urban centers. The US is a little more even spread than most, with the exception of the western states.