As I explained in my original comment, KFX does have technical advantages over EPUB.
2) Why doesn't Kindle support EPUB natively?
Probably because there isn't a need for one, as they are using KFX anyway. Why invest time in something that is only for people who aren't using your platform?
I was reacting to (should have added a citation) :
> I think there is actual technical reason why Amazon don't adapt EPUB natively
Kindle is out since 2007, KFX was released in 2015, hopefully when you create your own format there is some advantages.
In the end it appears we agree that the position of Amazon is : "Why invest time in something that is only for people who aren't using your platform?"
But we probably disagree on the answer to it :D.
Then surely, Amazon will show good faith and open source their superior, albeit, proprietary format and back it with a standards body that makes it less monopolistic, no?
1) Why Amazon keep re-inventing the wheel?
As I explained in my original comment, KFX does have technical advantages over EPUB.
2) Why doesn't Kindle support EPUB natively?
Probably because there isn't a need for one, as they are using KFX anyway. Why invest time in something that is only for people who aren't using your platform?