I know this has - inter alia - to do with publisher's rights, but I still find it frustrating that a product is marketed to users and when someone (like me, in Australia) orders the item, it gets put in the shopping cart with a message "unable to distribute... to your country"
The latest occurrence of this for me relates to John Stott's free book (2012) "The Radical Disciple: Some Neglected Aspects of Our Calling" (https://ebooks.faithlife.com/product/167186/the-radical-disciple-some-neglected-aspects-of-our-calling)