Two people are allowed to have the same name and unless one of them trademarks it, I would expect Amazon to do something like this. After all, J K Rowling isn't her name either, and it could just as well be a name I picked. What makes it hers exclusively to use for this purpose is that she trademarked it. Otherwise, I could also have the pen name J K Rowling.
- Book by her https://www.amazon.com/Business-Chicago-Writing-Editing-Publ... links to her Author profile https://www.amazon.com/Jane-Friedman/e/B004KHXQ0U/ref=dp_byl...
- Book by other person with same name https://www.amazon.com/gp/product/B0CD8YW4PQ links to no Author profile and instead to a search for that name
Two people are allowed to have the same name and unless one of them trademarks it, I would expect Amazon to do something like this. After all, J K Rowling isn't her name either, and it could just as well be a name I picked. What makes it hers exclusively to use for this purpose is that she trademarked it. Otherwise, I could also have the pen name J K Rowling.