I'm struggling to understand the AI business model that will eat Google's lunch. Currently Acme pays Google to list their rocket skates at the top of the search list for skates. How does AI compete? While corporations may be willing to pay for the use of AI, individuals seem less likely to do that if the alternative is free. So somehow the AI business must convince Acme that by paying for search results their results will list Acme first without mentioning the ongoing "Coyote vs Acme" liability suit. What am I missing?

As I understand it, the actual search results are organic, that is, the results are what Google thinks you are searching for. Ads are always labeled ads. If Google thinks you are shopping for rocket skates, there will be some vendors pop up at the top, with the results below. AFAIK, the shopping results are also organic, unless they are labeled as ads. By the way, you can make shopping results go away by clicking on "web" instead of "all" underneath the search window. But I agree, I'm starting lots more searches with AI. Perplexity now has a browser which they call an assistant, the idea of course is avoid Chrome altogether. I imagine the other AI engines have similar plans.

But the other way ads work ad placement on websites. As you browse, Google places ads it thinks you'll click on. Google gets amazing click through (I believe they actually invented click through payment), so that portion of the business is probably safe.

Interestingly, Google appears to have anticipated the AI search model where you are looking for the answer, not a webpage with the answer. Starting a few years ago, if you searched on certain items like the weather or stock tickers, Google would (and still does) display the answer above the search results.