It would make more sense for iOS to develop a more desktop-like environment. Perhaps not a desktop clone, but some alternative arrangement that offers more advanced possibilities than the basic iOS grid of apps but without going all the way to the 90s desktop GUI. As has been pointed out people can do probably some 80-90% of what you need to do on an iPad (especially the iPad Pro), but a lot of people are hesitant to commit to the iPad because of that last 10-20%. Split-screen is a good start along with background activity (but this needs improvement), but we still need a better file system (or clever alternative), better text selection/cursor alterative, better solution for multiple screens and better/more full-featured apps.