To say that only communication and shopping have been revolutionized in the past 20 years is grossly misinformed. Human interaction with each other, with ourselves, and with knowledge has been fundamentally changed for a very substantial portion of the population. No, it has not reached every corner of the globe, but neither has electricity, radio, or television.
And let me question your claims about knowledge being fundamentally changed. Kids still go to school. Still pass exams the same way as 50 years ago. Education has not changed at all, except for a pocket of people who follow coursera or other online systems. It's all very small and you are probably exaggerating the impact because you are aware of it and living in that particular tech-sphere. Not everyone read Hacker News, not everyone knows how to use computers, and most people who have computers do the same very basic things with them every single day. At least my claims are substantiated. Amazon has clearly changed shopping, and Skype/IM/email has drastically made communication cheap and led to calls being very affordable in almost every location in the world. For other things, change is not so visible and apparent.
Everyone. Because what changed is not only the amount of information, but also the immediacy of access to it. Those people going drinking to the bar quite likely found it on Google before going there for the first time. And those same people now Google up everything they want to know the moment they need it, including many practical things. "Normal" (non-tech) people, from my observation, tend to look up on-line many things in their life, for example gift ideas, travel & tourism information and practicalities ("how to do X").
You could also argue that it is the first time so many people are exposed to such a big amount of cultural work - including pirated movies, music, YouTube and Internet memes. People share common culture across the globe, and the Internet itself slowly starts to behave like a single brain.