Worth emphasising IMO. People are conditioned to using Google and its quirks, that can make alternatives engines a little less intuitive. Also they're often criticised for overrunning verticals with their own offerings. My favourite example being celebritynetworth.
Sorry didn't get this, what do you mean exactly?
Celebritynetworth is an example of this where a site had some unique content, G apparently realised that lots of people search for such stuff, asked the owner for an API and then eventually scraped it. A rough version of events, more details below.
There are lots of examples of well performing sites/niches where similar has happened.
https://docs.house.gov/meetings/JU/JU05/20190716/109793/HHRG...