[pas]

desktop environments (from Windows to iOS, including OSX, macOS, KDE, Gnome and everything in between) sort of already do this. they provide services and they provide apps/programs that require those services.

what they don't provide is interchangeability of programs from different environments. probably the closest thing is the freedesktop.org semi-standards, but there's not much compatibiltiy or interoperability between KDE and Gnome stack. (KDE's Plasma needs all the usual K-things and Gnome's thing needs, well, I don't know what it needs, but it does almost nothing but needs a bunch of things to do that :D Xfce sort of piggybacks on Gnome, but also uses a lot of their own shit, but at least Xfce is great.)

basically this is due to Conway's law:

https://www.youtube.com/watch?v=5IUj1EZwpJY&t=2153s

because there's no counteracting force that's pushing back to make things use a standard :/