Comment by samatman

"Twitch plays Google Docs" is always going to be incoherent, for social reasons. CRDTs can make it possible, they can't make it a good idea.

But for a contrived example, a game with hundreds of players, backed by an enormous JSON document, where the game engine is in charge of making sure each move makes sense: A CRDT could enable that, and each player could save a snapshot of the game state as a simple text file, or save the entire history as the whole CRDT.

Or as a less contrived example, instead of a game, it's a chat client, and it provides rich text a la Matrix, but there's no server, it's all resolved with CRDTs and all data is kept client-local for each client.

There are a lot of cool things you can build with a performant CRDT.