But, at what point does an interface become too generic? For example, the concept of pages of icons in a grid isn't really new or innovative. The concept of swiping across screens is simple and intuitive and should be standardized (e.g. copied) for that exact reason.
Yep. For that matter, other phones had the ability to slide swipe between multiple homescreens before the iPhone did.
If people stop to recall, the iPhone originally only came with a dozen Apple apps and one homescreen.