I haven't used Grok that much, but I find it intriguing from the business POV. I already spend $20/mo on OpenAI. If I could have a similar quality with Grok but in a Twitter Premium bundle, I'd be more prone to keep Premium. More users with Premium = more ID-verified users, which should lead to a higher quality of the feed. Plus, Grok could help people put their thoughts into words, which might make existing users more active. Looking forward to seeing how it plays out.