Comment by SepiaSapient

I think there's plenty of interest, Samsung, Pixel and Motorola are just some of the companies with multiple generations of foldables. Besides enthusiasts, the type of person that might want an iPhone duo is someone that doesn't really use a laptop. The utility of a tablet for media consumption and light productivity with a small footprint is real thing.

The problems besides price (which are still insane) until now where:

- Materials not catching up, things like the older creases, dust ingress, etc.

- Software in Android being hit or miss, specially on with third parties. Apple has the muscle to make apps compatible with the form factor.

- The "standard" foldable aspect ratio sucking ass, the only major exceptions being the Surface Duo, the original Pixel Fold and the recent Galaxy Fold. Passport format is simply better.

>Imagine if Apple dedicated this huge engineering effort onto existing products.

For what? Slab phones are practically solved, the only things that might make a normal iPhone better besides incrementally better camera, battery and processors are not Apple approved. No expandable storage or cheap battery replacements for you. The only place for real advancemnt will be foldables for a while.