A shopper asks what to buy. Three products come back, and you have no idea whether yours was one of them.
An assistant can’t match “fits under an airplane seat” to your carry-on unless the dimensions are in your product data. A photo of the bag doesn’t count. Same for anything the model can’t confirm against what you’ve published.
Most GEO advice teaches you how to get a model to quote your article. This is about getting it to pick your product.
Keep your SEO budget. The structured-data work that earns your search rankings also feeds the assistants.
See all four things agents check, and how to test where you stand.