> why would you want a single physical device anyway?
All my files and apps setup they way I want them on a single device that's with me 24/7. Complete privacy and security because my data never leaves my device (except for backups to a time machine or iCloud).
I don't have to own multiple computers. I own one computer: my iPhone. There's only one device to setup, update, and maintain. If I want to have a larger screen, VR headset, eGPU, mouse, keyboard, speakers, headphones, etc., I just pair my phone to one. I can buy different peripherals for my home, my office, etc. but I don't to buy redundant computers.
Think of the Nintendo Switch.