The question really should be what if anything gives OpenAI an advantage over Anthropic, Google, Meta, or Amazon? There are at least four players intent on eating OpenAI's market share who already have models in the same ballpark as OpenAI. Is there any reason to suppose that OpenAI keeps the lead for long?
Anthropic takes safety to mean "let's not teach people how to build thermite bombs, engineer grey goo nanobots, or genome-targeted viruses", which is the traditional futurist concern with AI safety.
OpenAI and Google safety teams are far more concerned with revising history, protecting egos, and coddling the precious feelings of their users. As long as no fee-fees are hurt, it's full speed ahead to paperclip maximization.
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.