This breathless article from 2009 [1] (found in 2 seconds by searching "tech will change the world year:2009") is a good example of what most people thought. You can find blog many posts and articles from the time saying basically the same thing. If you forget, back in 2012 people used to tune into Apple's yearly keynote with bated breath in anticipation of what marvelous innovation Apple would grace us with next. An app to replace your therapists? Uber for dogs? Solve poverty and racism? That was the attitude I remember among my peers (college kids and yes, professors too).
[1] https://www.rferl.org/a/Science_And_Technology_That_Changed_...