I think Microsoft was playing around with glass panels that slid into each other... or at least very close to each other, a few years ago. Looked nice...Soft plastic and moving parts are terrible. The wear of it‘s material is something Apple will not implement (this way).
Maybe there will be an alternative to the actual foldable design without it‘s flaws when Apple might release a „foldable“ design.
let me google this for me...
holy fire of water it's currently being produced.