Back in the 80's one guy talks about his dream of a $500 UNIX computer. He is told that this cannot be, due to the amount of CPU power needed. OK, today you can buy a computer for $249 and load Linux for free. Why is it the Windows was the winner?
UNIX was always hard to use, and there are many reasons why Linux isn't triumphing over Windows. I would say the main reason is that people are use to windows. Few adults want to change their ways and learn new operating systems.