[antiframe]

I am not aware of what abilities Electron offers that is lacking in Emacs. Can you give a couple of examples?

There's little you can't do with Emacs given it's a small C core running a Lisp interpreter and both the Lisp code that make up Emacs features and the compiled core are open source.

[PurpleRamen]

Emacs is a text-interface, character-based, there is no pixel-control. So everything graphical or pixel-related is mostly impossible, until it gets special treatment or involves some hacks to allow some very special limited usage. Electron on the other side has webstack and it's full range of abilities for GUI, mouse-interaction, video, fancy font's, even a freeform canvas and some more...