I am still think that transfering state between devices is the next big thing(tm) waiting to happen. I am working on a file on my macbook, now I want to seamslessly move the whole application working on it to my nearby Windows machine and just continue. Seems impossible right now.
Even expecting state on a single device to remain is a pretty tall order. Something randomly happens at least once a week which forces me to close all my browser tabs, either the OS or the browser restarts. Often while I'm working.
Apple has been iterating on Handover and Continuity for many years and it’s still not perfect (maybe it’s better on a newer stable of devices, I couldn’t say). But it’s clearly challenging even within a tightly coordinated ecosystem; I suspect crossing the platform divide reliably would be extremely hard.
