Is this a regional thing to buy without DRM? I just checked some books from my reading list and many have DRM. Just some examples if you could double check: Dou

Is this a regional thing to buy without DRM? I just checked some books from my reading list and many have DRM. Just some examples if you could double check: Double Star Project Hail Marry Children of Time A Memory Called Empire This is How You Lose the Time War While I know/assume that it will be easy to remove the DRM, I do not want to install Adobe Digital Editions to download the books.