Personalization has always meant picking the closest fit from a fixed menu of options. That ceiling was never intelligence: it was inventory. A team can only personalize as many experiences as it has time to build and courage to ship. Every variant is another asset someone has to design, test, and maintain by hand, forever, for a menu that's already too small the day it launches. This isn't a content problem: it's an operating model breaking under its own weight. So what happens when the website has to make thousands of small decisions a day, none of which anyone built in advance?