Why isn't anyone creating smaller, specialized search sites? Imagine a search site that is dedicated to nothing but sci-fi, and it includes blogs, reviews, and

Why isn't anyone creating smaller, specialized search sites? Imagine a search site that is dedicated to nothing but sci-fi, and it includes blogs, reviews, and discussions from a curated list of smaller and independent publications. No large, ad-heavy, seo gimmicky sites are indexed. YaCy (https://yacy.net https://yacy.net) seems like a reasonable option for this. I run an instance (non-peered) internally on my network. I index smaller blogs, mostly around music reviews. While I like to use RSS to get updates, I find having a search engine is great to go back and find something or to seek out something new. I only index with a depth of 1, so I get the origin site plus any direct links to external sites. For my purposes, it has been working really well and is easy to maintain.