LLM search will be ruined the exactly same way, just faster. Google search used to be good, until the company concluded they will earn more money by making it crap. Then it took some time for it to get worst, bit by bit.

With LLM, the same company will learn from previous experience and make it worst faster. It is exactly the same company, making exactly the same product (search), with exactly the same management and being subject of exactly the same market forces.

The result will be exactly the same, they will just get there faster.