Agreed, but...
I do agree with the concept of the Ford, Chevy, Dodge argument. However, many make their choices based on familiarity and ease of getting help. That being said, it becomes even more important for Linux to make more than a 1% or 2% inroad into the OS marketplace. A number of applications that I wish to use simply will not be available to me on Linux. That leaves me with the decision on whether for my necessary work (not play and education), I wish to deal with different OS'es. Sad to say, I usually don't. Hence, I end up in the MS Windows fold, which may not be my first choice if not for the application dilemma.