3D movies/TV are the perfect example: It's been PUSHED SUPER HARD for decades by execs who swear up and down the improvement in immersion will be life changing and utterly reinvent the entire industry but oh oh oh the tech just isn't here yet but you just wait it will totally take over everything.

In reality, 3D would not have made the new ghostbusters a better movie. Nobody watches a movie for "immersion", they watch it for a story.