Well, the would say that, wouldn't they?
Gartner has predicted foldable phones will capture a puny 5 per cent of the flagship market by 2023.
I guess they've got to say something but at the moment I reckon it's too difficult to call. If they're reliable then then screens and devices could take off, otherwise they will perforce remain niche. I also think that future trends will increasingly be driven by Asia and China and these are notoriously difficult to predict, but it was definitely the Chinese preference for huge screens that prompted Apple to adopt them in order to stay in the market. And Shenzhen's ability to develop should no longer be questioned: when Samsung first teased their folding screen I think most people imagined they might have a monopoly at least for a year or so. Instead we're going to see at least three companies release foldable screens about the same time.
I guess we'll know more towards the end of the year once people have had some of these devices in the pockets for a while to test their usefulness and their reliability.