You are also DuckDuckGo’s, StartPage’s and Qwant’s products. They sell your space on screen for ads. Now, they haven’t enshittificatied to nearly the same degree as Google and full enshittification happening is of course not a given but making the user a product is basically step #1 to enshittification.
With Kagi, the product is the search engine service. You pay money and in return you get search results, lenses, bangs and all those neat little features. You are not being sold to 3rd parties. (At least not right now but I honestly don’t see that happening any time soon.)