It's perverse that we've accepted as OK, taking the concept of movie regions, to books. It's perverse that we've accepted we're effectively licensing a book rather than owning it, losing the right to loan out, or gift, any ebook the same as any book. It is a corruption of good ideas into bad ideas. These things should be called rentals at the time of sale.
Old complaint (2012) https://www.zdnet.com/article/why-amazon-is-within-its-right...