Even if they allow Kindle format onto other platforms, it's still
Kindle format, which is still a closed, proprietary one.
Obviously, if Amazon were to embrace epub format, that would open the Kindle up so that material from the extra-Amazon parts of the world could be included on it easily, and would be an excellent example of the sort of move O'Reilly thinks that Amazon will need to make to avoid his prophecy of doom. Just adding reflowed PDF support would be something of a step in what he seems to consider the right direction.
