Bill Gates predicted ( or at least wanted ) "a computer on every desk and a computer in every home".
He was, of course, wrong as usual. He was looking at the world as a well educated, thoughtful person that loves technology for its own sake.
Most people are not like that. Most people care about what they can do with technology. If they are given more interesting things to do ( from their point of view ) or better ways to do it, they will likely adopt said new features and mechanisms.
In other words, every technology advance eventually devolves in the mainstream to consumer electronics and appliances, because that is what most people want.
Personally, I treat my mobile phone mainly as a phone, with occasional use of flashlight or maps apps. On the other hand, it WAS a Windows mobile, but now runs MIUI Android, because I'm a geek.
Similarly, I find tablets to be really useful for watching cat videos while still slumming in bed, but useless for everything else, where tiny screens don't suit my old eyes or my giant hands, and the "Apps" are generally poorly programmed, dysfunctional or pointless.
But that's OK. I'm happy to use my general purpose computers for all the things people use phones, tablets and games consoles for, plus all the things those devices can't do.
And when tablets disappear to be replaced by headache-inducing head-mounted displays with voice control whatever, I'm sure I shall largely ignore tham as well.
Choice is a great thing.