Chat should be a sidecar to your more permanent data, not the main thing.
Chats are ephemeral, but contain lots of facts, insights, and implications that could be useful in the future.
Extracting those insights takes work… and it's easy for the system to get it wrong.
ChatGPT does this with its dossier, which it's continually expanding, tweaking, based on your most recent chats.
The facts and insights are more important than the chat.
A few years after a conversation, the chat doesn't matter, the more permanent insights that can be extracted and structured do.
Which is primary and which is secondary, the chats or the facts?
Today the chatbot form factor assumes the former.
But I think it's the latter.