I found your analogy of a librarian only giving out quotes insightful and enlightening. Thank you.
It was a TIL moment for me: Make the training data available and indexable! Similar to a snapshot of humanity's complete knowledge and stories.
Today the AI models are like a librarian who knows well all books of the library but can't carry around the library in a bag. There was a time when she read all the books, but now the books are in thousands of crates in sub-basements and not available.
I envision a future where exabytes of data or more are stored in a smartphone-like device in something like a tiny crystal. The AI model on request can make a copy of some original for you. And this thing can't be bricked.