I know user agreements are a bit of a punchline, but when you created an account with SO presumably[1] you also agreed to waive certain copyright/ownership claims on your contributions, and in general you voluntarily agreed to benefit SO’s business by contributing there. Same as Twitter, etc. That is not the case for ChatGPT. OpenAI definitely trained it on my personal GitHub account, along with everyone else’s, yet I don’t remember accepting an agreement with GitHub that said any Microsoft subsidiary could use my code for whatever they wanted.
