I gotta say, I think you're romanticizing this idea a bit. You're imagining a seamless experience, but reality is messy. We've seen companies try this - Microsoft with Continuum, Motorola with the Lapdock. They all flopped. Not because they weren't cool ideas, but because the compromises hurt both sides.
A desktop OS needs active cooling and sustained power. A phone needs to be cool and quiet in your pocket. You can't have both without making one experience worse. Even the best foldables or docks still have that awkward "this is trying too hard" feel.
And honestly? I like having separate tools. My phone's for quick rhythms - texts, music, maps. My desktop's for deep compositions - writing, editing, thinking in layers. Forcing convergence feels like trying to play a piano sonata on a harmonica. Sure, you can hit the notes, but you lose all the nuance.
03:02 PM