Apple's hardware isn't appropriate for every situation. If it were to be white label, they would need to make the software available to other hardware developers, and that's never going to happen.
This article is more about software than hardware, the apps largely don't care what hardware it's running on.
Your sentence doesn't make any sense, you start with "Apple's hardware" then you talk about "make the software available to other hardware developers". Do you mean hardware accessories for iPhone? It's in 3.0.
What? No. I mean they would need to make the software (iPhone OS 3.0) available to 3rd party hardware developers in order to have a "white label" platform.
This article is more about software than hardware, the apps largely don't care what hardware it's running on.