[deleted_account23]

All online bookstores ultimately want to prevent piracy (they'll be less bothered by people stripping DRM for own personal use even though that also against their T&C's I suspect).

And within 10 years I predict it won't be possible, for those that currently do so, to strip DRM from any new book. I think it isn't possible to strip DRM now for any KFX books post Jan23 and the workarounds just deliver an earlier file version via 'download via usb' or an older Kindle, and the DRM is stripped from that older file.

The vast majority of ebook users don't use calibre or even think about DRM. They just sign up to an ebook ecosystem (Kindle, Kobo, nook, Google whatever) and don't think about it. People who are aware of these issues are a tiny majority of users I think

So I suspect long term the choice will be to choose an ecosystem or buy a physical book; and workarounds will be stopped by preventing download via usb and removing support from old Kindles. Kobo and others will likely do the same.

I may well be wrong but I don't see how it is in online book sellers interests to allow a workaround that allows for abuse. Time will tell