The solution is not necessarily to buy only books with no DRM. Another way is to remove any DRM immediately after buying and back up your purchased books. That's what lots of people here do and we still have all the books we bought 10-15 years ago. Plus we can read our books on whatever device or app we like.
And of course there are folks who don't care, because they read everything only once and are not fussy about where they read their books. To each their own.
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