Can't read it either, but my first guess from the parent comment's quotes was that the story was saying competitors can't: 1. buy ads for amazon product-name k

Can't read it either, but my first guess from the parent comment's quotes was that the story was saying competitors can't: 1. buy ads for amazon product-name keywords to compete with amazon by also selling amazon products. 2. buy ads for amazon product-name keywords to compete with amazon by selling one's own non-amazon products.