You must mean free text search and page level return, because it already has full metadata indexing.
The thing is AA doesn't hold the texts. They're disputable IPR and even a derived work would be a legal target.
> a derived work would be a legal target.
Why would it? Google isn't prosecuted for indexing the web.
Oh it certainly is. https://www.reuters.com/sustainability/boards-policy-regulat...
That's not prosecution for indexing the web. Google is being treated the same way AT&T was for telephones.