I'm not sure that CRDTs would be necessary for image editing, since all conflicting edits could easily be resolved with a last-writer-wins approach. 3D models a

I'm not sure that CRDTs would be necessary for image editing, since all conflicting edits could easily be resolved with a last-writer-wins approach. 3D models are a different beast, and I haven't seen any collaborative 3D modeling tool on the market (though I haven't actively searched).