I like how on the Duo and larger Neo Microsoft just embraced the fact that foldable OLED isn't ready for prime time yet and instead tried to engineer the seam with as much aesthetic and engineering quality possible.
I think this is the wrong approach to think about. Nobody needs a folding display.
What people need are actually two contradictory (until now) goals: compactness and large screen size. Folding is one solution to solve this contradiction.
The bigger question is "what do you need a folding display for?"...