If you take a look at marketshare, Americans are animals that spend well beyond their means in bulk. Apple products or Samsung products dominate the smartphone market and it's the expensive ones.
And the cars! JFC every time I come back to the States I'm amazed/shocked/appalled at these suburban land tanks everywhere. Just buy a normal car!
To be fair I know a nontrivial number of people who bought their iPhones used. I’m sure that happens in the android market, but it doesn’t seem to be as common in the US. I think the fact that iPhones have offered acceptable support for much longer than android has helps a lot there.