Amazon.com is their US site. If you're there, you've effectively walked into a store in Seattle. If you want a store not tailored to the US market, you'll need to visit one of the sites they've made for other countries (where this is probably not available yet).
Back when Amazon was registered I doubt anyone was using .us for a company website, so changing everything to point to that years after the fact would probably do more harm than good to the business, plus the fact that they at the start were only US based, so a .com at the time would have and still is the best choice for a US based brand identity.
At the time, sure. But since then they've added a bunch of country-specific domains. The store aimed at the USA could be hosted on a .us domain by now.
I think the crowd here over estimates how tech savvy everyone else is, or whom actually are aware of the .us domain, and also care enough to think it should redirect there.
But we already see that non-tech-savvy people go to Amazon.com from the UK and expect to be able to buy things that they can't buy. Having a .us domain would be less confusing, for most of the people on the internet.
If you visit the amazon.com site from outside the US it should tell you you're visiting the US store and recommend you visit the local site in your country with a button that looks like your country's flag.
True. But if they can "personalize" the price they show me when I buy books, why they can't personalize the web site and tell me these services are not available in my country?
This is how you know it's just as much investor marketing as it is to get early adopters excited; they want their overseas investors to know that they're not just sitting on their laurels this quarter.
They better do something meaningful. AMZN investors are not impressed lately. Some of them waited for an year to be break-even :) But that's different story...