@mark As we know, the G search ranking algorithms are ... complex. However, my sense is that it would be a mistake at this time to overthink what's going on. It's obvious that AI results (whether "Overviews" or in some other form, and largely irrespective of how inaccurate they are in full or part) are disincentivizing users en masse from clicking beyond the AI answer. This is reality, not merely perception, and this reality is going to affect the regulatory view of Google and other firms in major ways going forward, since Google et al. are increasingly being viewed as essentially website vampires.