My point is that that question was never asked: practically all of the publishers that sell on Amazon's marketplace - including Amazon Publishing - agree that they want DRM incorporated into Amazon's digital marketplace platform.
And you seem to be dodging my point? My assertion/wager/whatever is that the publishers actively want it so that Amazon has to have DRM on their devices and sales. Just as they want it on libraries lending. Do I /know/ this? No. That is why I worded it as something that would shock me.
I agree that my willingness to wager on this would go down as I extend it to my larger guess, that they also have terms covering things that Amazon publishes. That said, it lowers my willingness, but it does not seem beyond the pale.