Nobody could understand how a PC would get on every desk either. And then it happened. Thanks to a bunch of young people unhampered by that thinking.
You could have said "Was it over when the Germans bombed Pearl Harbor?" and it would have had as much bearing on the discussion as undervaluing the growth of the PC market.
Whether one is hopeful or young, or not... doesn't allow them to escape basic economic forces. Do you have an economic argument to inform the conversation?
Sorry to offend.