https://consumerrights.wiki/index.php?title=Amazon_Kindle_removes_download_feature_of_purchased_books#cite_note-theverge-2
https://www.reddit.com/r/LouisRossmann/comments/1nyqhdf/kindle_books_described_as_drmfree_sold_with_drm/
https://consumerrights.wiki/w/Amazon_altering_the_content_of_purchased_ebooks ... https://www.youtube.com/watch?v=Y9r3585MjWY