your compt will run your tv; broadcasting will die out, and we'll just download the programmes/films we want. advertising will evaporate and will be replaced by product placement
your telephone will run via wifi, and basically be a skype phone. when your out and about, it'll just connect to other wifi nets, and have backup radio telephony as a reserve.
your fridge will have two doors: one on the back and one on the front.
the guy from the store will turn up with your groceries, and scan them in. as you remove them, they auto-scan out. your compt will suggest menus according to your preferences (veggie/spicy/fish/wuteva) and you'll just need to confirm. it'll then tell your store to deliver.
but, back to the point. Consoles were a cheap solution to an ever-present problem: when they release a game, half the market cannot buy it as they dont meet minimum/recommended requirements. so they produced a standardised machine to level the playing field.
with quad-core processing, we have processing power to burn. your console and your pc will merge into the same box, and relay the game to whichever tv you want in your house - bedroom, lounge, den, etc