The article says that the Kindle supports EPUB. As far as I know* it does not support this format. And it's one reason I won't buy a Kindle any time soon.
The Nikkei is sometimes incorrect about technical details (it's a financial paper after all), and the mention of EPUB on Kindle could be their misunderstanding or just a wild speculation, which is their another trait.
The original article online appears to be behind the pay wall, and I couldn't find relevant article on paper, so this is just a guess...
The original article online appears to be behind the pay wall, and I couldn't find relevant article on paper, so this is just a guess...