Google’s search engine has indeed changed the world and the way we access information, and we value this contribution. We’re grateful to have access to Google's search technology and infrastructure for Kagi.
But instead of trying to create a search product for billions of people, we want to develop a refined search experience for sophisticated customers who value high-quality results, privacy and speed.
Kagi will allow you to discover well-written articles from lesser-known blogs and use features like Lenses to personalize results. Ad-supported search must avoid this kind of depth and flexibility to stay profitable. Read more about Kagi's unique features, many of which can never be replicated in ad-supported search engine.
https://kagi.com/faq
https://blog.httpjames.space/im-paying-for-my-search-engine-maybe-you-should-too/