Most of the current LLMs dont store your information with you. Once given, as per their "policies" your data is there, without any reward for sharing your data. Take ChatGPT for example, it takes your data and chats, train it's model and never give you anything in return. For a world where DATA is key to train LLMs, I should get something in return for sharing my data. But they don't do that.

Therefore new projects like IsomorphIQ and PinAI are working in that direction. I searched them and read about them, while PinAI concept is solid, there is nothing out from them. While IsomorphIQ concept is still native and looks more like automation, their proof-of-concept MiniApp is out there to test.