Comment by thg

> Amazon could effectively brick your device if so desired.

I have a 16 year old Kindle (Keyboard) that Amazon actually decided to turn into a brick last month [0]. Still works just fine and will continue to do so thanks to Calibre, but buying books from Amazon, or using their "Send to device" feature (both through the e-mail convert and for books already in my Amazon library) is now forever closed for me and de-registering the device will brick it with no recourse.

[0]: https://www.techrepublic.com/article/news-amazon-ends-suppor...