Nobody really knows how to product-ize any of these LLM interfaces beyond just chat. They don't want a traditional UI with buttons and forms and labels because they want the interface to be "chat". The problem is that "chat" is tedious. And the turn-based, linear nature of the chat interaction model makes it even more tedious and unproductive.
I don't think it's that anyone wants the interface to be chat. I think it's that the underlying technology is inherently words in and words out. It's similar to how devices with capacitive screens are most naturally going to support tapping, dragging, and pinching.
I know this all sounds abstract. I've been mulling over it for the past year and it's very hard; and LLMs are super janky and inconsistent so it's 100% not trivial. So in some sense I understand why a lazy bottom-of-the-barrel "chat interface" has become the de facto standard.