X.com Maps could tie in with Teslas, X.com Carhailing could tie-in with (future) full self-driving; Twitter could be expanded to be more like Telegram + Instagram, with channels, better DMs, "Moments", and more.
There's no attempt to create a single, wide-ranging social media platform, with payments, video, shorts, DMs, and more. China's proven that it can be done. It would create a far bigger moat and network effects, and likely be as successful as Microsoft Teams & 365, a highly integrated solution, are for work.