ferris209 said:
Here in Texas, all soft drinks are Coke.
I never experienced that in my years in San Antonio, so perhaps it's more localized than that? I've always understood that to be a "southern" thing, and some parts of Texas are much more "Southern" than others.
Also, this: http://blogs.static.mentalfloss.com/blogs/archives/35163.html
Mental Floss's list of 15 companies known for one product that originally started off with something else.