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What component is most likely to fail on a computer? The gpu.
How does the computer industry feel about modularity? Solder everything down.
How would Apple make an egpu display? Solder everything and put in a gpu barely powerful enough to push the pixels around the screen.

Ummmmmm....
Google “eGPU”.

Bonus hint!
The “e” stands for EXTERNAL!!
 
It might be an ugly display, but it works well and is the most colour correct to the Apple displays on their Macs. I have the 27 inch one and it’s hideous to look at, especially with the top bezel to house the camera, but screen is brilliant.

Cool. But I can't stand to see this thing next to the gorgeous mac pro
 
Apple is leaving its desktop users behind. Wait for Mac Pro w/ display, it will be a $15,000 debacle that nobody will buy and headlines will harken back to the Lisa. Apple will find a way to screw it up.
You were pretty much correct about the $15,000 part!
 
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