If foldable was was going to be an Apple thing, they would already have had it available.
There is a compelling argument that the demand for cell phones that do less are going to become popular. The reason is that you can't text and drive, they are not a warehouse for your personal life, and they don't distract you from what you are supposed to be doing.
It may very well be that a future cell phone you get from your employer is the same as the one one you got in 1995.