An opportunity hiding in plain sight is that much of the Instagram audience seems to prefer the Muse visual interface to iMessage.
Muse has done some things well, but in many ways it’s a v1 UI for the most powerful capability that’s been invented since ChatGPT.
Somebody’s going to build a more opinionated design that’s counter-positioned against Muse / specialized for an audience in a way that’s hard to copy, and run away with a really valuable part of the market.