> Standardize data and services and you don't need that much software.

We've known this since close to the advent of computing and yet every generation of has taken us further away from this goal. Largely driven by jealous resource-guarding, particularly when it comes to data. Why don't I have a generic media player app that can stream Netflix, Disney, Hulu, etc? Those brands want control over my experience. They will continue to want that control indefinitely. That basic human desire for control won't evaporate with a "single unified codebase".

Every happy OS will be the same. Every broken OS will be broken in its own way. What a nightmare.