Phones are also often paid for too. If you had a keyboard + screen + battery and could just clip your phone in that would feel like a pretty nice setup.
Bonus there is that it's one place for all your data.
Alternatively, on the data side I've been shocked at how cheap storage is now. I bought a 256gb usb stick shipped for £10. I've got tiny 4tb external drives. You can get terabyte microsd cards! It'd be pretty nice to have a setup where the device is intended to be blank and you just pop your data card in. I know it's more complex but not that complex for what would to me feel like a fairly sci-fi thing.
You're right about phones also being provided.
With that in mind, I'd say: if your company and other places of business you tend to visit all go for this concept, I think it could work. But as long as the boss expects you to work on a laptop, this'll remain a niche application.
Honestly, I'd love to be surprised and see everyone switching to docking setups everywhere. But I just think the positives over current working modes are too small to gain the needed traction. And that's before considering downsides other than investment costs/overcoming network effects.
Bonus there is that it's one place for all your data.
Alternatively, on the data side I've been shocked at how cheap storage is now. I bought a 256gb usb stick shipped for £10. I've got tiny 4tb external drives. You can get terabyte microsd cards! It'd be pretty nice to have a setup where the device is intended to be blank and you just pop your data card in. I know it's more complex but not that complex for what would to me feel like a fairly sci-fi thing.