I believe the web currently possesses the capabilities to make a networked Emacs/Smalltalk style system, souped up with AI, targeting web applications that don't require downloads; I've been pursuing such a system for a while and hope to have a prototype soon. There isn't really anything like this - Emacs is stuck in Unix-land, Replit is tied to React/Next.js (blegh), and Urbit sees obscurity as a virtue.