It'll be interesting to revisit this article and its closing comparison after Apple introduces its AR glasses
"Samsung and many of its rivals have been gambling on the new form factor to, if not prompt a wave of new purchases, then at least allow them to raise their average prices. Smartphone sales have been slowing since their 2016 peak. Consumers are increasingly satisfied with the handsets they already own, so are replacing them less regularly. That’s why firms were developing foldable screens: Huawei Technologies Co. has its own competing model, while Xiaomi Corp. and Lenovo Group Ltd.’s Motorola are also working on the technology.Samsung Stumble Risks Killing Foldable Phones at Birth | Bloomberg
Samsung is easily the most significant of these players. Not only because it is the world’s biggest seller of smartphones, but also because it sells its technology to others, not least Apple. By some estimates, in fact, Samsung made more profit from supplying the iPhone X’s organic light-emitting diode display than it did from its own Galaxy S8. If Samsung gets the foldable tech right, then Apple could well use it in a future iPhone.
Samsung’s nightmare would be if the Galaxy Fold became another Google Glass. The smartglasses, released in 2013, proved an abject failure. The technology wasn't ready and pushed the appetite for augmented reality eyewear back by years. Foldable phones are different – they have far more obvious uses – but Samsung has to be careful not to kill the market before it even starts."