I like the idea of this conceptually but it feels that I could do all this with github actions. Is it the interactivity and ease of changing the script that is the selling point here?
We've seen that it's not unusual in operations for folks to walk through runbooks running commands that require small (but important) amounts of human input. Runme makes that experience considerably better by utilizing the markdown that's already there and allowing for behavioral configuration (user prompts, process execution, language interpreter etc). But you can also name, and run groups of cells/commands to streamline your workflows.
Yes, most likely. Many organisations are still tied to manual/semi-manual deployments due to company policy or regulatory compliance (banks for example).