The Mac itself still hasn't proven that it has a place in the future. It's not any more profitable than the iPad in revenue breakdowns, and doesn't come close to the install base of the iPhone. Compared to Windows PCs and Linux servers, Apple has entrenched the Mac as a second-class citizen for traditional computing. Instead of pushing to make macOS an unavoidable flagship operating system, Apple promotes insular API/SDK usage and seemingly leans towards a less-profitable B2C market segment. Tim Cook's obsession over service revenue caused Apple to forfeit the high performance ARM market, which is a shame, since Apple Silicon is quite competitive in ways that the Vision Pro and HomeView will never be.
Once they go down that path, they open themselves up to whatever technology changes and drifts happen in an entirely different market, which right now is going through a tectonic shift with AI. We don't even know what happens in that market in 1-2 years let alone 5 or 10 or more. The business cycles are different, the customers are different, the demands are different. How do you even begin to plan for that?
You're zeroing in on a technical advantage Apple currently has with silicon while ignoring the lack of advantage they have everywhere else in their operation. That'll never happen and it's the antithesis of a half century of company history.
As far as the Mac, it's the truck that does the heavy work so the other platforms like iOS are light [1]. That's been the guiding philosophy, the sandbox it plays within.