That's totally fair and things may change. For me its the history and the fact I can come back to it.
If I am honest I believe my final solution will be a combination of Open Claw, a custom knowledge wiki based on Wikmd. I just need a good all for Claw with history that is as good as gpt
Edit: and context too. It inferred my energy supplier from previously chats and so when I just asked a pertinent question it referenced their policy. Admittedly Google will have way more context if they get the product right.
Gemini has history and memory too though, maybe you weren't aware. It's an app just like ChatGPT and you can even import your history and memory, try it.
Gemini also has it all, it learns and knows who you are, you have history of chats where you can just jump back into a conversation a week later if you want to.