I've been thinking about this for years[1]. The truth is, what Google solved was parsing the search query, not identifying the best results. In fact, Google is not incentivized to give you the best results, they are designed to maximize their revenue, derived from getting you to view / click ads.
Google is not a search company, they are an advertising company. The more searches you make, the more revenue they make. Their goal is to quickly and often get you to search things. As long as you keep using their platform, the more you search the better.
[1] https://austingwalters.com/is-search-solved/