‘AI’ in its current state requires vast amounts of data. It will only understand (to the degree that such systems do) new subjects after thousands of books have been written on them. So I don’t see how the original sources are going to completely ‘taper off’. Most people might not look at them once a subject has matured to the point at which its form can reasonably by replicated and interpolated by machine learning models, but by that point it’s old knowledge anyway.