1. Rarity of DRM-Free Books on Amazon
Users note DRM-free books are uncommon, mostly from niche publishers like Tor/Baen or self-publishers, with opt-in limiting impact. "Out of around 1000 books I had 300ish that were DRM free." (buu709); "How many books are actually available DRM-free? This reads a bit like ... unicorns don't exist." (tgsovlerkhgsel); "All books published by Tor are DRM-free." (amluto).
2. User Exodus to Kobo and Alternatives
Many have abandoned Kindle for Kobo, Boox, or DRM-free stores due to lock-in and restrictions. "Switched to a Boox, installed koreader ... It's insane how much better." (paradox460); "I sold all of them last year and bought a Kobo Libra Colour." (stringsandchars); "Do yourself a favor and go get a Kobo reader." (monomial).
3. Distrust of Amazon and Embrace of Piracy/DRM Stripping
Account bans wiping libraries and DRM history fuel avoidance, piracy, or tools like Calibre. "I can no longer log in and lost access to all my Kindle e-books." (icqFDR); "pirating everything on annas archive et. al. cannot be beat." (IlikeKitties); "I break the DRM off books I've bought." (kstrauser).