A good batch of history and observations by Nick Heer at Pixel Envy about ads coming to AI chatbots:

It is incredible how far we have come for these barely-distinguished placements to be called “visually separated”. Google’s ads, for example, used to have a coloured background, eventually fading to white. The “sponsored link” text turned into a little yellow “Ad” badge, eventually becoming today’s little bold “Ad” text. Apple, too, has made its App Store ads blend into normal results. In OpenAI’s case, they have opted to delineate ads by using a grey background and labelling them “Sponsored”.

Now OpenAI has something different to optimize for. We can all pretend that free market forces will punish the company if it does not move carefully, or it inserts too many ads, or if organic results start to feel influenced by ad buyers. But we have already seen how this works with Google search, in Instagram, in YouTube, and elsewhere. These platforms are ad-heavy to the detriment and frustration of users, yet they remain successful and growing. No matter what you think of OpenAI’s goals already, ads are going to fundamentally change ChatGPT and the company as a whole.