It's funny how it's always American who "forget" to mention that something is scoped to their country. I kind of always felt that given that their country is so vast, they must feel like there is nothing more out there, or at least it's not worth mentioning.
I've found many, many American businesses trying to sell their product via ads or other kind of marketing, but "forgetting" to mention that they are US-only.
I'm not trying to attack American people or something, it's just a personal (and probably very biased) observation that I've had.