Apple expects you to dump your old product and buy the new one just as soon as it comes out. And they don't expect you to sell the old one to someone else. There's no such thing as an old Apple product. There is only the current Apple product, and trash.

Phones similar in size to the iPhone, for example, typically have a removable battery. A battery that can be replaced is just common sense, given that batteries rapidly lose their ability to hold a charge after a few hundred charges. But iPhones are not designed to last. They're designed to be used until the new one comes out, then discarded. The same goes for iPods.

iPhone and iPod batteries don't make sense, unless you understand that these are disposable products. They look like fine china, but they're sold like paper plates.

Steve Jobs famously said that "." This comment (which you're reading, by the way), was made in response to a question about the Amazon Kindle. In Steve Jobs' world view, nothing exists outside the Appleverse. People don't read because Apple doesn't sell a reader.