One Year Later, the Results of Tor Books UK Going DRM-Free
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It was trivial for me to move from Amazon MP3 to Google Music (and back, if I want). It'd be far more work to get off Kindle. Even if tomorrow another company came out with a far superior device than the Kindle Paperwhite, how many users could just jump ship? Ripping the DRM off is a pain, even if it just requires some googling and downloading into another program.
Publishers getting off DRM is a good thing. Just remember that the real reason is they're terrified that Amazon holds the keys and are regretting their decision to willing hand things over to Amazon.
http://www.antipope.org/charlie/blog-static/2012/04/understa...
Reminds me a bit of when Lotus took DRM off Lotus 1-2-3 in the 80s. Prior to that you had to have the disk that Lotus installed from in the floppy drive at all times. Totally sucked. They dropped DRM, sales went up, and their support costs went down (paying customers affected by DRM make support calls, pirates dealing with DRM do not usually :-)