That's great, AT&T is awesome in Canada, Europe and at dusty factories in Asia lolCertainly there are rural locations where coverage might be an issue, but I travel extensively in the US, Canada, Europe, and Asia and I haven't hit a dead spot in a decade with AT&T. Skiing in Vermont, dusty factories in China, skyscrapers in Manhattan, lake houses in Texas, never had an issue at all.
So, yes, if someone lives in the mountains or the woods you choose the best carrier for that situation. But to have a decent conversation comparing carriers we have to talk in broader strokes, AT&T is great.
To the subject of this thread, AT&T did a great job in responding to the unlimited data surge, they created an offer, it didn't stick, they flipped it quickly, the new one is very competitive and reasonably priced.
Guess what, you are just roaming on partner international carriers when you're outside the US.
Same as any other carrier would but who am I to bust your bubble. Yes, AT&T is great all over the world. You even get fast LTE on the moon
Many would disagree with your claims but whatever.