True, but capacitive multi-touch hasn't been the only innovation in the iPhone over the years. We forget just how limited the original iPhone was (no 3G, slow CPU -- it took ages to render a webpage, even though it was a huge step up over its contemporaries, it was still barely fit for purpose, no App Store either).

I think the slides in the keynote were actually on-point for this, there've been multiple innovations (multi-touch, high-DPI screens, Touch ID, their shift to in-house processors, computational photography), and it's really the aggregate that's lead to a great device. But break it down and it is an iterative, evolutionary process. That's why so many people often seem disappointed after every keynote!

That said, maybe the original iPhone really was a bit special :-)