Speaking as an 'oldie' - I only got into computers in 2003. I soon realised that I wouldn't be able to keep up the 'hobby' unless I learned how to do a few simple things and learned where everything on the PC was 'kept''
To get a call out back then was £30 for the first hour and then - well, god knows...
My first encounter with that was when I realised I needed to put in a bit more memory - £30 for that and £30 for the man to come and do it.
Therefore started my (obsessive) searching on the net for info and cheaper goods. I quickly learned how to get myself out of trouble with help from a good forum and a few computer magazines.
Since then I have only needed outside help twice - once when the actual switch on the tower had died - switching on was beyond me...
Then recently when I just could not get the emails to work on what is now the 'old' computer. I had a new PC. printer and modem.
BUT - Most people I know are just scared they will 'break' the pc. I have a couple of friends who are even too worried to change a folder name without assistance.
Hence the unwarranted high prices for adjustments and repairs in the shop.
We have PC World here in the UK and they are just as much a rip off. It is possible to get a decent price on things if you go through the net on their 'pick up in store' option. I would just say though - They have a vested interest in Norton - I was given a 'hard sell' when I bought a PC there. I like to choose my own programmes.
So, this then, is the reason, I think.