Who needs to search for something the most? What topic doesn't have a destination website? I would figure out a niche that needs search and is an industry that

Who needs to search for something the most? What topic doesn't have a destination website? I would figure out a niche that needs search and is an industry that is highly fragmented and likely to stay that way. Unfortunately, i am not sure if there are any :), at this point it might make more sense to build a destination site to claim that niche. I.e. you go to amazon for books/shopping, you go to facebook groups or reddit for info from people, travel stays at booking/airbnb... etc etc. what niche really needs external search? /phone ramble