Just my opinion, but to me, no one wants a foldable phone. At least no enough folks to make it a success.
Here's Apple's dilemma on bleeding edge stuff like this. Apple cannot release an iPhone with bleeding edge tech precisely because they need to be able to manufacture 50,000,000 of them for the first quarter of sales. No one will be able to manufacture enough of these bleeding edge parts to meet Apple's demands.
No other company has this dilemma. Samsung can release a niche phone like this and sell 6,000,000 and be hailed as an innovator. If Apple sells 6,000,000 of anything, it's viewed as an mitigated disaster.