There are multiple ways to do the computation. All of them will show LLMs having unit economics that are at least an order of magnitude better than search engines for the search engine use case[0]. Not multiple orders of magnitude worse like you claim. You're off by at least three orders of magnitude.

Ad-supported LLM Chatbots will be one of the most lucrative businesses ever.

[0] https://www.snellman.net/blog/archive/2025-06-02-llms-are-ch...