IANAL but copyright allows you to control the reproducing medium, in the case of DRM this would be the digital files. It doesn't allow you to control the ideas

IANAL but copyright allows you to control the reproducing medium, in the case of DRM this would be the digital files. It doesn't allow you to control the ideas presented in the medium, so copyright alone cannot restrict you showing the page you're reading in your e-book to your friend or friendly AI. If you publish on the internet you can by copyright restrict someone else from downloading your work and putting it up somewhere else, but you cannot restrict who views it if you put it in a public place. There are other license agreements for that of course but then you'd have to force people to agree to it in order to view your blog post or fan art first. Nothing is stopping gated community sites that require an account to view stuff to require a suitable license agreement. I'm pretty sure it would restrict the views though.. Regarding "just scraping the data to adjust model weights using an algorithm", all research so far shows that the brain does just this, even though the full details of the algorithm are unknown and all the places the weights are encoded are not known in full.