"Developers with innovative ideas develop apps for mobile platforms"
If they fit a mobile platform - and where are the "innovative ideas" even on mobile platforms, anyway? Most of the apps are still social/chat/intermediation/streaming - and any variation of them - as long as they can steal you as much personal data as they can.
Not that a limited input/output device can do much more.
Anyway, IIRC in OS/2 3.0 you could design a folder like some kind of workspace, put into it shortcuts to applications and documents, and they were opened and closed when the folder was opened and closed.
"Innovation" looks a lot like "recycling", these days.