I mean, even still, my point stays the same; if you have access to their strategies, I don't see why you can't just get the MCP to directly mimic that.
It’s achievable. It’s called “direct indexing”, and there are some extra costs associated with it, so for most investors, I think it is cheaper to get QQQ. You can flip that around with tax loss harvesting but I don’t understand that strategy and I can’t explain it.
You also don’t need AI to do this. Before AI, the main barrier to direct indexing was the amount of capital you need. That is still true.
I have enough capital to where I can do everything with the incremental share threshold of Interactive Brokers; as such I don't have to deal with the fees associated with normal direct indexing.