If my Kindle ever breaks I'm going to look at Kobo. I prefer whatever ecosystem sells me the ebooks that are easiest to de-DRM so I can own what I've paid for. A decade ago, that was Amazon, but they have locked down a lot.

I probably will move to Kobo eventually as well. My current device is the Oasis and I wish I had bought a spare. I was always hoping Amazon would update it with a USB-C port which I would have bought on day 1.

I know it's such a small issue that no politician will ever take it on, but I really wish there would be some legislation around forcing interoperability and ebook transfer rights.

You can buy a Blu Ray disk and it's going to work in your player. Ebooks should be like that too. And I should be able to give away my ebook collection the same way I can my BR collection.