If iOS gains enough features to replace macOS, then it will just be macOS again. iOS is gaining new features, but it's still a rather constrained and touch-focu

If iOS gains enough features to replace macOS, then it will just be macOS again. iOS is gaining new features, but it's still a rather constrained and touch-focused environment. For example, you can do split-screen on iPadOS, but you can't do arbitrary overlapping windows. Instead they're focusing on ways to save "scenes" and switch between apps, but each app still owns the portion of the screen it's been given (and those portions are very constrained; full-size, half, 1/3rd, or a slightly shorter 1/3rd in a slide-over; and the 1/3rd size is literally supposed to be your iPhone UI). They added mouse to iPadOS but strictly as an accessibility feature, and apps can't even detect that the mouse is there, let alone add mouse-related functionality. The file system is still heavily locked down. There's still no process spawning or any indication that Apple will ever allow process spawning (which is a hard blocker for a lot of developer tools). iPads support external screens, but not as the primary display (that's basically just for projecting stuff, e.g. presentations or photos). Ultimately, there's no point in relaxing these restrictions for an "iOS-derived" laptop OS. The primary argument in favor of unifying macOS and iOS was the fact that iOS has a lot of developer momentum and that way you can use iOS apps on macOS, but that's exactly what Catalyst gives us already. Apple is working towards unifying stuff at the developer API level (e.g. Catalyst, SwiftUI, etc) but at the OS level macOS and iOS are quite distinct and will stay that way.