Today everyone has a computer in their home, kids have them in school. Libraries have become computer stations that also have books. It's a different world. People don't tinker anymore, in fact on iPhones, iPads, iPods and to a lesser extent Android devices, they aren't allowed to.
Don't know why some people live under the delusion that everyone has a computer in their home, or use a mobile phone etc, etc...
Perhaps it's the environment or social group in which they live and obviously never venture outside of that makes them believe this myth, afraid thats something I can't answer.
What I can answer with 100% certainty is that not everyone has a computer in their home, not everyone uses a mobile phone, etc. How can I say this, simple, because of personal experience. I know more people who have no computer in their home than do. Whether its through choice or financial reasons. I know people who don't own or use a mobile, people who don't even have any form of mp3 player.
As for tinkering there are still many folk who tinker with things, be it computers, TVs, old VHS recorders, the list could go on and on.
Point is, if you are under the illusion that everyone has the above mentioned items in their home then perhaps it's time to leave your keyboard, switch off your computer and venture outside into the real world and experience a bit more about life and people and even try a bit of tinkering.
http://www.statistics.gov.uk/cci/nugget.asp?id=868