Excellent reporting on the trials: https://www.bigtechontrial.com/

We’d love to build a distributed search engine, but it would be too slow I think. When you send us a query we go and search 8 billion+ pages, and bring back the top 10, 20…up to 1,000 results. For a good service we need to do that in 200ms, and thus one needs to centralise the index. It took years, several iterations and our carefully designed algos & architecture to make something so fast. No doubt Google, Bing, Yandex & Baidu went through similar hoops. Maybe, I’m wrong and/or someone can make it work with our API.