Apple’s product lines follow a very specific pattern: start small, and then grow into something bigger and more complex. There was originally one Mac, one iPhone, one iPad, one Apple Watch.
Over time, the product lines got more complicated. Sometimes too complicated, as anyone who remembers Steve Jobs returning to Apple with a four-quadrant grid in his back pocket, driving out an ocean of Performas and reducing the Mac to four simple products.
Read more at Macworld.com