Right. That is why the desktop market is declining and mobile is in the hands of just about everybody. Your implausible scenario precludes so many potential advances.
I'll just name one: Inexpensive, room temperature superconductors.
Wait, I lied. Super efficient batteries.
Neither of those require new science just engineering.
that has to do with the marketing side of things, the world is going through a development phase because people are tired trying to get jobs working for someone else because "someone else" doesn't need you! no matter how qualified you are.. people are out and about at school and trying to start their own businesses, doing the groundwork for a new product or service. naturally you can't lug a desktop with you, and laptops can hurt the shoulders when carried all day (I should know). so the market has gone mobile.
But as with all development phases, it will eventually come to an end; and people will get Home, or to an Office and they will want a more graphical gaming entertainment without the auto-correct typing feature that molests anything not in it's dictionary, something with a real keyboard or controller not a touch screen, they will want a more secure operating system with all the typical admin controls and no god-aweful splash screen. They will want surround sound and a bigger screen they can enjoy from a comfy chair.
When people get home, the mobile game boom will end.
And then all these companies pushing into the mobile game market will take losses if they don't pull out fast enough. Many have abandoned non-mobile frameworks entirely leaving themselves nothing to fall back on, for them the losses will be severe..
The computer game age will return, I promise you that. this mobile game thing is just a social fad engineered by monopolization leaving the masses to fend for themselves to make work rather than find it.
What do I mean saying monopolization? they say a healthy market is one that works together and is in sync. well, if it syncs too much and works together too closely you get a one track market. and that means everyone is moving towards the same goal, otherwise known as Cooperative monopoly.