Too much cognitive overhead from choosing all of these options. I want inexpensive (unlimited) high quality service, ideally with no service contract. Choosing between five service providers every time I want to make a phone call (or even every time I go to a new city or state) is insanity. See e.g.
http://www.newyorker.com/archive/2004/03/01/040301crbo_books
on having too many choices.