Consumers are limited by humanity. We are all just meat sacks at the end of the day. We cannot, and will not, sift through 1 billion books to find the one singular one written by a person. We will die before then. But, even on a smaller scale - we have other problems. We have to work, we have family. Consumers cannot dedicate perfect intelligence to every single decision. This, by the way, is why free market analogies fall apart in practice, and why consumers buy what is essentially rat poison and ingest it when healthier, cheaper options are available. We are flawed by our blood.
We can run a business banking on the stupidity of consumers, sure. We can use deceit, yes. To me, this is morally reprehensible. You may disagree, but I expect an argument as to why.
Okay, I fundamentally disagree with your premises, analogies to water and banking (or even in your other comment about piracy [0], as I have not seen any evidence of piracy leading directly to "suicides," as you say, and have instead actually benefited many companies [1]), and therefore conclusions, so I don't think we can have a productive conversation without me spending a lot of time saying why I don't equate AI production to morality, at all, and why I don't see AI writing billions of books having anything to do with morals.
That is why I said it is your opinion, versus mine which is different. Therefore I will save both our time by not spending more of it on this discussion.
[0] https://news.ycombinator.com/item?id=42971446#43054300
[1] https://www.wfyi.org/news/articles/research-finds-digital-pi...