Interesting reading indeed Erik and well done to Doug for putting the articles together so clearly.
I suppose the overriding question is- Why? To which the immediate answer is because there is the insatiable human desire to push the boundaries and produce something that is the very best irrespective of cost. As cars are always the default machine to compare anything with it is the Bugatti Veyron of the camera world and is an achievement that should be celebrated for that reason alone, but will it's practical use ever extend beyond a very small circle of perfectionists that can afford it? Even Phase One don't pretend that it will, so I suppose we must admire it from the sidelines knowing that even if we could buy one tomorrow to use in our regular work, any images produced will suffer during the process of making that image available to humankind via print or web or whatever. It's a wonderful device, but probably like the super models it will be used to capture, it will remain beyond the reasonable expectations for most of us for many years hence.