"640k ought to be enough for anyone." "There is a world-wide market for about fifteen computers."
Time and time again people have been deeply mistaken about anything having to do with the future of computing. The first time I saw a VGA display I was so smitten that I thought "this is the best it can be". Well I was wrong and so were a lot of other people who thought that there would never be a need for something more advanced than what technology has to offer today.
We expand technology by pushing against the current limits, finding things that cannot be done as the technology exists today and figuring out how to get it done and then proposing that solution as a standard. Meanwhile someone else has found a different solution and they too have submitted it as the standard. Then the wrestling begins perhaps one solution is accepted or maybe the solutions are married or an entirely different standard is found or maybe everything is rejected and they become proprietary products.
I'm 55 years old with lots of gray hair yet I still hold out hope that before I die I will be able to play, just once, in a holodeck, maybe with someone overseas. That could require something more than gig lines.