- Nobody plays consoles anymore so whining about controllers is pointless. You're an old man if you assosiate videogames with TVs and not smartphones.
- Wireless internet is already standard via smartphones, but even then expanding this to desktops is fine since it makes it easier for people to create their own meshnets.
- Nobody uses wireless headphones unless they're a macfag who needs to have every apple product
>Wireless Displays? Wireless Guitars with wireless amplifiers?
Wireless power transmission, obviously. If the technology can be figured out it will be everywhere, you won't ever plug anything in again because you'll just place it within range of a suitably equipped outlet that will find the receiving port on the device and beam power right into it from a few feet away. Long distance power lines will be made obsolete for the same reason. This tech would exist now if it wasn't for rectennas suffering from vendor lockin and choking the market with unusable garbage, similar to how nothing (other than smartphone accessories) uses bluetooth because it's just one standard of many.