For my use of Kagi, probably more three quarters of "my" searches are made by Kagi's assistant or a custom assistant I've made via their interface, as a result of the assistant formulating a response to one of my queries to it. Kagi search is so much better than Google, so the assistant ingests much better context (i.e. the results) before it answers. In that sense, Kagi is still picking up the search traffic Google and others are leaving on the table, but the relationship is healthier. I'm paying to use a search because of the quality and there are no ads to show, so the assistant doing the searches is just as beneficial for both parties (I get a more powerful tool and they get a happy subscriber) as human initiated searches.