The campaign quickly generated buzz because it played to peoples' worries that inviting advertising into AI platforms which many of us now rely on - and confide in - risks blurring the line between helpful advice and paid influence. But that anxiety, while understandable, overlooks how advertising already works across much of the digital world. In many ways, ads based on our interactions with AI aren't such a big leap from the kinds of targeted advertising that already dominate search engines, social media feeds and e-commerce platforms.