From whom is it stealing value from? Random other potential investors on the stock market? Since the parent comment is specifically mentioning semantics, this

From whom is it stealing value from? Random other potential investors on the stock market? Since the parent comment is specifically mentioning semantics, this is the distinction "theft" vs "fairness" that I don't really understand. From an outsider perspective like me (I don't own stocks except through my 401k), Wall Street seems like a game of information asymmetry anyway where the only winners have an information edge at some moment in time. Now the question is about how "fairly" was the information obtained which seems pretty blurry to define to me.