Imagine the world today had hp claimed ownership of Wozniac's first PC?
It would have been inconsequential as there was only one Cream Soda computer.
You can do important stuff from the command line on Windows - IIS log queries with LogParser and batch image editing with ImageMagick are some of the reasons I've used this in just the past couple of days. But the average Windows user never needs to see or touch it. This is why Windows is a mainstream desktop OS and Linux is not.
Could you explain why MSDOS triumphed over Mac OS in the personal computer marketplace for 11 years before finally being replaced by Win95?
None of this is the case with PC command lines. The syntax, spelling, and formatting has to be exact or else it won't work. There is very little wiggle room. If the average person had to write a perfectly spelled, perfectly grammatical sentence using only specific hand-picked words in order to be understood, then mass literacy would be impossible.
If you misspell something, the computer will say 'huh?' and throw syntax error. You'll go back to your history, find your typo and be on your way. This is really not beyond most people.
Anyways, with tab completion, people should hardly ever be making errors unless they already know the commands by heart.
You're already carrying the sphere!