Close your eyes, and count back from 5. Imagine yourself in front of your computer trying to implement some complex thing. You have 5 browsers open with tons of tabs each giving you small clues to the solution. At the same time you are furiously navigating your filesystem, looking at different parts using multiple file managers. You feel you are close, but you can't be too sure because there is so much to consider. Soon you find a great lead and start to hunt it down. You are 10 levels deep in a folder structure, and realize that as long as you fix X given Y you will be able to get Z which will get you to A! You click and click and click right to the magical config file. The answer is right there, you know it! You open it to edit, make your complex changes - PERMISSION DENIED! Oh no you have to sudo! Where's the command line!! Which folder was I in!! What was I doing!!! Ahh forget it! You play Halo instead. That's what happened to RMS and why he was not able to develop his own kernel, ceding the spotlight to Linux.