Ok, but have you considered the fact that those numbers are actually pretty small for the international market considering that the US represents only about 4% of the global population? Even if you limit it to the English speaking world it’s only about a 5th of the global population, and of the movies mentioned only Avengers even came close to having the kind of market penetration it did in the US (discounting how much of that international market number is made up of non-English dubs and subs).

Suggesting no one watches them is a bit of a stretch, but there are certainly a lot of people outside the US who just don’t.