Quote:
I also suspect that when the initial DRM started to be widely circumvented the
Pro-DRM forces pushed for the adoption of the stricter "Topaz" DRM.
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There's no such thing (and never was) as Topaz DRM. Topaz ebooks share the same DRM scheme as mobi books from Amazon. The problem with Topaz was that it is a new undocumented proprietary ebook format that must be "figured out", much the same way that the mobi format (also proprietary) has been deduced over the years.
Maybe it achieved the same thing as a new DRM scheme would, but I don't think that was the motivation behind Topaz.