Originally Posted by JSWolf
We hold iBooks incompatibility against Apple. So yes,we can hold Amazon's incompatibility with the industry standard ePub. ePub is the standard world wide. There are more people reading ePub then reading Amazon's eBooks.
If you admit that there is incompatibility inside Epub then the Kindle's external incompatibility is less important.
And which Epub is the standard?
B&N, Kobo, and Apple each have their own fixed layout format; the content is not compatible. There's also Kobo's own internal format as well as Apple's implementation of Epub3 as well as the iBooks format.
So which is it?