Sarcasm is boring. They can't be folded yet in real world mass market products. When it happens that'd be another story.Yes, clearly manufacturers are moving to OLED because its benefits are so small
Or perhaps, just perhaps, the fact that they're thinner, lighter, have greater saturation and contrast, and can even be folded, might have something to do with it.
Thinner and lighter: iPhone is thin and light enough, a 10 gr reduction in weight won't change anything.
Greater saturation and contrast is not so great in comparison with the last iPhone and small improvements OLED will give in that area are outweighted by its burn in issue.