There's probably some selection bias working here. I'm sure plenty of people predicted things going to happen in the future, and we only hear of either the surprisingly correct ones or the ones completely off the mark.
My favorite not-implemented Atari Labs memo, fwiw, was Brenda Laurel's suggestion that they design games for dolphins and humans to play together: http://www.kmjn.org/snippets/laurel82_dolphinvideogame.html
Despite the fact that VALVe makes games, they're unlike any other gaming company out there right now. The Minecraft team is a few iterations and portfolio additions away from that same tier.
But this one is neither surprisingly correct
(laptops for all, wireless communication and an online encyclopedia? You don't say!)
nor completely off the mark
(mostly ok, missed a few things like the public internet, thin laptops and tablets).