It's only 4:30 in the morning here so dont jump all over me, but in terms of a digital image, just thinking logically, there's a very finite white and a very finite black. In terms of photoshop for instance, black is 0, white is 255. You cannot extend that number range any more than that. Given that a stop, in essence is 100% more light than the prior stop, I suppose camera manufacturers can in essense desensitize files... make the white detail even more subtle, making shadows even more subtle giving the illusion of more DR, more stops, but A) there's no getting around digital files limits, and B) there will be even less information in each stop range, am I right?