My one and only Google interview went this way years ago. Each round they'd send me more books to study, which frankly I couldn't be bothered to read given the circumstances. My experience ended when an interviewer in round 3 or 4 asked me an obviously scripted question. I answered sarcastically, he got peeved, and I never heard from them again. I'm not claiming I'm Google caliber, whatever that means. Obviously I'm…
They do it because they know they can get away with it, but I do wonder if they have a backup plan if the lustre of working for Google ever fades, because it's an open secret that their interview process is a fucking nightmare for no reason.