Except now there’s not. The fact is, when you tell somebody something, what they choose to do with it is out of your hands. Unless you want to start using drm-encumbered systems.

There's still a difference between a person deciding to share one or a bunch of messages they receive --usually I know the people I write to, so I know more or less what to expect-- and systematically uploading received message to some AI. Fine if they do it locally, not fine if the messages I write end up at Google, OpenAI or anybody else.

This is unrealistic. Hardly anyone who is going to feed their own messages to an AI is going to pay attention to whether it’s local or cloud based. Get real.

Well, then not at all...

So you're saying DRM is good now?

No, I’m saying when you send messages to someone else, they are out of your control. Trying to fight that with DRM would be folly.