What will happen when AI has crawled through 100% of the non-AI data?

I am from non-tech background (could be obvious). I am curious what will happen when all the data that humans have created so far gets crawled or read or seen by GPT/midjourney.

I believe currently AI is generating content using human-generated content from past. What will happen when the total amount of AI generated content exceeds several folds than Human-generated content. Say 99.9% of the content being AI. Post that wouldn't AI be creating more content using AI and it …

ai data artificial data generated gpt human humans midjourney tech through will