Yes true. But I am not sure you can discount the other domains For example .co.uk and .com.hk, for example, have a global reach of 3 and 4 percent respectively

Yes true. But I am not sure you can discount the other domains For example .co.uk and .com.hk, for example, have a global reach of 3 and 4 percent respectively (I've made a guess that those are the top two alternate domains). So already that is a significant boost to the Google stats. (edit: checked .fr, that is another 3% reach) (edit2: .de and .in are also in the top 20 and contribute 3.5 and 4 percent in their turn. I make that a [rough] grand total of 57.5% reach.)