[Ide]

I can think of at least two websocket clients (Decaf and phud) not to mention other text game 'clients' such as interpreters. All have issues with screen readers. It may look easy because it's 'just' a web page, but in my experience it's not that simple.

All of this talk about websockets is besides the point though. You already can use websocket clients to connect to muds that don't support websockets.

Creating a mud that takes connections (websockets, telnet, custom protocol, etcetera) is a relatively simple task. Creating a mud that other people want to play and/or use as a base for their own creation is another task entirely.