If I were in charge of marketing a foldable phone, I think I would call it a mobile 2-in-1 rather than foldable because that puts emphasis on the functionality. From using the original Surface Duo learned that you have to think of these devices as a small tablet first and a smartphone second.
I could be a target consumer for these devices because I am a heavy tablet user and a lite phone user, and I use both devices every day. The problem is, no foldable is ever going to be as thin as a standard smartphone and feel comfortable in front pants pockets.
Price is a real constraint right now. When the price drops to a comparable to smartphone + tablet then it will be more compelling. So I wonder, how long will it take for a new foldable to cost $800 or less?