This is definitely an overly ambitious project idea, but now that Google has Jetpack Compose and Apple has SwiftUI, and the web has React, I wonder if it would be possible to make a "meta-framework" that uses a single code-base to compile user written code into source code written in those 3 frameworks respectively.

Then you would get truly native, cross-platform development.

Now, the probability this would ever work is 1%, but it's something that has lingered in my mind anyway.