I remember the argument- heard a long time ago, much before mobile phones became a thing- that progress and incumbent replacement in the computer industry has a

I remember the argument- heard a long time ago, much before mobile phones became a thing- that progress and incumbent replacement in the computer industry has always happened when new, smaller generations of machines replaced the previous ones: from mainframes, to minicomputers, to microcomputers. That is surely how Microsoft became the dominant player in the 80s and 90s. I guess the current mobile phones could be called nanocomputers, and the opportunity to displace Microsoft's dominance in the OS market was too good to miss.