Why do you think this implies they are building a search service rather than just scraping your site for more training data?
I've noticed an interesting pattern: before releasing LLaMA 3, OpenAI provided access to ChatGPT 3.5 without requiring registration.
Meta might also follow this path with its own search engine. Did you know that you can now ask questions directly on Instagram and receive answers from Meta AI using LLaMA 3?
Why go elsewhere for information when you can easily find it in the app you use every day?