Why wouldn't Amazon boost it's own products? I'm a big boy, I can scroll past obvious product recommendations. The flip side is that I prefer some Amazon Basics stuff (cables, rechargeable batteries, etc.) over some name brand stuff.
Amazon.com Inc. has adjusted its product-search system to more prominently feature listings that are more profitable for the company, said people who worked on the project—a move, contested internally, that could favor Amazon's own brands.