You are redefining DRM to fit your needs and desires here.
YOU don't get to decide what the vendor has authorized. THEY do. Its part of the problem.
Amazon has not authorized any DRM content from anyone but Amazon. Because it is a technical roadblock doesn't make it any more right than someone buying a book from a vendor and "converting the format" to some other hardware that it will work on *regardless* of if that format is locked or not and they "could" share it.
If they never do then the "could" part should have ZERO relevance.
The Kindle is not authorized to use DRM'd content from anywhere but Amazon. You can't have it both ways.
Actually, you CAN, but from your postings previous, those that choose this path are...criminal
