iPhone and iPod are very interesting and unique case studies in that they combine high-end differentiation (the devices, or at least the brilliant marketing-fue

iPhone and iPod are very interesting and unique case studies in that they combine high-end differentiation (the devices, or at least the brilliant marketing-fueled perception of the devices) with low-end disruption, and with network-effect ecosystems (music, apps). The low-end disruption is cheaper music (iPod) and cheaper computer (iPhone). Computer in that many consumers initially saw iPhone as a way to do email, web and apps without paying for separate computer and Internet.