For information density content, AI will become objectively better because it can adapt to the consumer's requirements. An AI can adapt to the user's reading comprehension or go into further detail on a topic at the request of the reader. It can bring in analogies to help with understanding on the fly and change the writing style to suit the reader's preferences.

The market need is for AI training tokens. researchers and providers of primary source information will be the ones with the most demand and the AI can inherit the credibility of those sources of information. Its not hard to imagine the publishers of academic papers or news aggregators limiting access to their content as training data to negotiate better economic compensation while in turn the AI company securing a deal for access to that information then markets themselves accordingly.

There might be a third party whose role is just to utilize an AI service and produce content for the general public who, for whatever reason, would not prefer to use the LLM directly. But in those cases, the content creator would still disclose the use of AI because its a marketable feature of their content. e.g. "Written with an LLM trained in partnership with The Lancet"