Originally Posted by Nate the great
Nope. You're completely wrong about the fixed layout not counting as Epub. The IDPF calls it that and so do the 3 companies. And do you know what? They all meet the IDPF Epub spec.
There's simply no way for you to get around the fact that your beloved "industry standard" Epub has internal incompatibilities. So long as that remains true the Kindle format can't be faulted for not being compatible.
Also, you ignored my point about the new iBooks format, which is yet another form of Epub.
If they do not meet the ePub 3 specification for fixed layout, then they are not ePub regardless of what they say. There is not another form of ePub. It either is or it isn't and in this case, it isn't.