Hard to imagine that anyone at Apple sees MacOS (or the Mac in general) as a promising career path. All the 'A' players are either working on the iOS platform and devices, or have cashed out completely.

Especially with the move toward forced open-plan workspaces in the new campus, I suspect Apple is going to have serious problems attracting and retaining key talent in the years ahead. They are reaching the point where stock options will no longer be a strong incentive due to lack of upside potential.