i agree linux is a fantastic o/s but for your average user, its not very useful, your average user would see a command prompt and go all hands to panic, which as u know is a large portion of getting some software/updates for things, i havnt personally used linux for a few years, but definately see what you are saying
I was an average user ie started on DOS 6.22 so you can imagine my learning curve rearranging memory,autoexec.bat files etc...
Nowadays they have it way too easy but still find it hard,even linux is a lot easier now then the old days, says it all really about level of the average user in modern times ,sad in a way.