The adults don't adapt well. We all grew up with paper. Books and libraries are still a big nut to crack. I hope that the day arrives when we can read all books online, for a price perhaps. Such changes are in some ways like movies.
Theaters are alive and doing quite well despite the more convenient tapes and cable.
They've held out a long time without offering us the chance to see top movies at home as soon as they are out. This results in no way to easily test whether theaters would largely disappear if not as unique. I presume that they will still be as involved with rapid change as we are now. Even when computers stop expanding rapidly due to Moore's Law, bandwidth will still be growing wildly. I wonder what will happen if you can have entire movies on a postage stamp sized device.