"Apple fans are willing to upgrade from older devices and pay the $999 price tag mainly because of the Face ID feature"
No the reason is dual cam in small packet, Those studiolight effects with portrait are already huge hit, and why wouldn't, looks amazing. And more people see them more they wonder how you can take those. https://www.instagram.com/p/BZb7uYmjVNJ/?taken-by=lasergirl_ another example https://www.instagram.com/p/BZZGivoHQM-/?taken-by=joshbicknell
These are the kind of stuff which masses cares.
“TrueDepth camera (3D sensing) creates a far stronger user experience than those of Apple’s rivals.”
If the stronger user experience is it failing like in the live demo.......where do i sign up?