A bunch of JS on a CDN doesn't cost that much to serve, if it's running on a remote server Stadia style than yes, but then what is the goal here? User/Customer acquisition always costs a lot of money...
At the very least, let me test the editor quickly, and prompt me to register upon saving a project.
edit: I always thought it was stupid that Stadia didn't provide tools like Blender, Gimp and co, it would have been a huge avenue for user growth. Then strike deals with Maxon for instance and run Cinema 4D in the cloud, that's a missed opportunity.
Colab allows that, you can run Blender in the cloud and basically use the service as a rendering farm, and it's damn fast. No GUI obviously...