Earlier quoted context omitted.
Microsoft already tried this in in mid 90s. It was called OLE (Object Linking and Embedding). You could embed a photoshop document live in your word document and if you clicked the embedded document the photoshop UI for editing would appear. It turned out to be absolutely horrible. Maybe it was before it's time with computers having only a few meg of memory and being slower than today but it seemed more of an issue b…
Sounds terrible, but what you're describing seems to still fall in the category of "integrating apps" rather than "no apps". I think the best real world reference point for "no apps" is the terminal. Piping commands together is very powerful and intuitive (in this way they behave more like composable objects than applications). It works well, except for being unfriendly and reliant on low level text streams, which ar…
In a COM model, you can imagine, say, a word processor being composed of UI, document model, document store and spellchecker components. In this reality, I could replace the UI with a touch-enabled one, and run the same spell checker on a remote computer, all with few changes in Windows registry. Think of it like OS-level dependency injection and microservices, with RPC and orchestration being handled transparently for you.