Maybe I'm living in a fantasy world but isn't this what Google does with Gmail and people are completely fine with? What's so surprising about this that it nee

Maybe I'm living in a fantasy world but isn't this what Google does with Gmail and people are completely fine with? What's so surprising about this that it needs a lawsuit. Is the angle that Yahoo haven't been proactively forthcoming about something that most people take as implicit (or maybe skipped a ToS/Privacy Policy clause)? Where do users think all this targeted advertising comes from, lucky-guess-engine (tm)?