When people hear “folding phones”, I think a lot of them are imagining their current (thin) phones folding out into a tablet. But that’s not reality, because the extra mass does not come from nowhere. The reality is a folding phone is more like two phones attached together. This of course begs the question, do you really want to carry the equivalent mass of two phones all the time?
For those who really want an ~8” screen always at the ready, the answer might be “yes”, assuming they perfect the form factor (durable, no crease, etc). For others who are fine with the size of their current phones, even if they perfect the form factor, the answer will obviously be no because the extra mass is just not worth it.
I’m in the latter group. The only kind of folding phone I’m even slightly interested in is a one-handed flip phone—in other words, instead of phone that unfolds into tablet, a very small phone than unfolds into a bigger phone. But even that doesn’t excite me much.