True but at what point is sharp enough. But then you also can't dodge and burn in density of colors. Sharp just how sharp is enough. At what size prints, now, do you need to make before you could see the difference in sharpness from the new back to the 100mp color back.
We at a barrier point of how big can you make a fine art photograph, we hit them all the time. I've been thru every barrier. but now we a big barrier. Mounting material come 48x96 and 60x120. Thats are limit and I don't see them making them bigger.
WE are at a point now whether your using a 50mp canon, nike, hasselblad, sony, Phase One. Since most with a high end camera never sell their prints, nor do they make their prints. So considering you can make a 100 in print thats sharp with a 100mp back and thats really the limit of mounting materials who really cares if the next back is sharper. The only thing that really counts is more control, dynamic range, color accuracy and better softwares without any defects.
Don't get me wrong we all want something better, but we are a barrier of most points in photography, the biggest barrier is the reluctance of people to spend more time perfecting their craft, more pain, more patience, more time, more creativity, more studying the art around us. I see it every where I go and even here. Just because its there doesn't mean you should shoot it.
The true barrier is the person behind the camera.