Because, as always, this is exactly what's going to happen: Apple doesn't have it now, so it must be useless technology. Then Apple licenses the technology (and claims that they have "totally invented" it), and all of a sudden everybody buys it and boasts it's the best thing since the invention of sliced bread.
(please share a case where Apple claimed to have 'totally invented' a technology they licensed)
Back to the more pertinent point, the phrase I highlighted in red. That's putting the cart before the horse a little.
It is true Apple doesn't have it now. It is also true it is useless technology ... for now. But the reason Apple doesn't have it now is not because they think nobody would want a foldable phone, but rather because folding phones are so problematic right now, there is no way Apple would put something out, yet, like Samsung has. Just some of the problems with the best foldable tech out there:
- Visible creasing
- De-lamination of the display layers
- Touch responsiveness/accuracy in the foldable region
- Screen-on-screen abrasion (when unit is folded)
- Artifacts/pixel issues in foldable region
These phones are
already showing problems, and they're barely even out. So, yes, today it is useless technology.
Folding phones may be viable, eventually. But in a world where we're used to a seamless, edge to edge (ish) display of hard glass and all the benefits that confers, trying to market a flimsy, breakable device with no end of visual problems is so clearly the wrong move ... and that's why Apple doesn't have it now. Someday, if those problems get solved, Apple may move into that market, but not before then.
So, to reword that phrase above: Today, it's useless technology, and because of that, Apple doesn't have it in their devices.