How has no one worked on a new search engine over the last decade or so where Google has been on a clear decline in its flagship product!
I know of the likes of DDG, and Bing has worked hard to catch up, but I'm genuinely surprised that a startup hasn't risen to find a novel way of attacking reliable web search. Some will say it's a "solved problem", but I'd argue that it was, but no longer.
A web search engine that crawls and searches historic versions of a web page could be an incredibly useful resource. If someone can also find a novel way to rank and crawl web applications or to find ways to "open" the closed web, it could pair with web search to be a genuine Google killer.