Apple is in the business of selling hardware, and developing a cross-platform toolkit would have the potential to cannibalize that. I think Swift's weak footing

Apple is in the business of selling hardware, and developing a cross-platform toolkit would have the potential to cannibalize that. I think Swift's weak footing in other OSs is also owed to that fact. Apple's best bet is to create an ecosystem of hardware and software that is self-sustaining and moated. I'd argue that they have been successful in that, but all those web platforms have significantly weakened the moat. You don't need apps like Sketch anymore (infact I consider Figma way superior), and you don't need most of their bundled native apps—there are great replacements that are either 3rd party native, or web based, or hybrid apps. So how will they strengthen the moat? Probably not by sharing code with other platforms. They seem to be ready to accept that distributed systems won't go away and are obviously actively buying into that space (https://github.com/apple/swift-distributed-actors/ https://github.com/apple/swift-distributed-actors/). But, UI-wise, I'm only seeing renewed determination to push native apps: https://www.imore.com/apple-rebuilding-apple-music-native-app-macos https://www.imore.com/apple-rebuilding-apple-music-native-ap.... And I think it makes sense for their bread-and-butter hardware business.