Marshall McLuhan also thought television would displace reading but I think it only happened for real when YouTube came along in that YouTube vastly expanded the availability of non-fiction TV.
One example is the disappearance of text guides for video games: circa 2010 you could still find good FAQs and walkthroughs such that if you got stuck or were trying to work out the dependencies in a Neptunia game such that you need items A, B and C to make item D and you'll have to visit locations E, F and F' (a variant of F you can unlock by making a "plan") you could do it efficiently.
Now for a 30 hour game you have to find the right place in 30 hours worth of video -- once in a while you are stuck because there is some place where you can jump where it doesn't look like you can jump and just seeing somebody do it in a video makes it totally clear, but just as often somebody in the video took a different route or has a different build and you've got no freakin' idea even after watching the video. There was already a problem for games like Pokemon where walkthroughs were problematic because of the high variance of builds, but it's far worse in video where you want a database more than you want a walkthrough.
One example is the disappearance of text guides for video games: circa 2010 you could still find good FAQs and walkthroughs such that if you got stuck or were trying to work out the dependencies in a Neptunia game such that you need items A, B and C to make item D and you'll have to visit locations E, F and F' (a variant of F you can unlock by making a "plan") you could do it efficiently.
Now for a 30 hour game you have to find the right place in 30 hours worth of video -- once in a while you are stuck because there is some place where you can jump where it doesn't look like you can jump and just seeing somebody do it in a video makes it totally clear, but just as often somebody in the video took a different route or has a different build and you've got no freakin' idea even after watching the video. There was already a problem for games like Pokemon where walkthroughs were problematic because of the high variance of builds, but it's far worse in video where you want a database more than you want a walkthrough.