Better said than I could do. One thing I’ve also thought is that if Linux had managed a first-class GNUStep environment with a compelling alternative to macOS

Better said than I could do. One thing I’ve also thought is that if Linux had managed a first-class GNUStep environment with a compelling alternative to macOS in terms of dev tooling, it could have been great leverage in terms of keeping Apple focused on the core developer experience in macOS.