Phones were already too expensive and prone to breaking without introducing foldables, so I don’t see the appeal. If it wasn’t so slow and expensive, I think I would have considered the original surface duo, as I prefer durability over a seamless screen. The new one with the camera bump, I don’t like the look of.
They might be cheaper elsewhere in the world, but here in Denmark, a Surface Duo 2 costs over 13k DKK, which is 2½ times as much as I paid for my Samsung S22 - and that was for a bundle including a Galaxy A8 tablet. I don’t feel like I would get enough extra usability to justify that cost difference, and I would be too afraid of breaking it.