I am not 100% sure this is wrong?
I frequently ask chatgpt about researching products or looking at reviews, etc and it is pretty obvious that I want to buy something, and the bridge right now from 'researching products' to 'buying stuff' is basically non-existent on ChatGPT. ChatGPT having some affiliate relationships with merchants might actually be quite useful for a lot of people and would probably generate a ton of revenue.
ChatGPT has recently been linking me directly to Amazon or other stores to buy what I'm researching.
Sure, but affiliate != ads. Rather, both affiliate links and paid ad slots are by definition not neutral and thus bias your results, no matter what anyone claims.
It's likely they already make money on affiliates, but this is different, ads are product placement.