Well, at this point most new data being created is conversations with chatgpt, seeing as how stack overflow and reddit are increasingly useless, so their conversation logs are their moat.
Google and Meta aren't exactly lacking in conversation data: Facebook, Messenger, Instagram, Google Talk, Google Groups, Google Plus, Blogspot comments, Youtube Transcripts, &tc. The breadth and and breadth of data those 2 companies are sitting on that goes back for years is mind boggling.