Uh.. they didn't 'cut out' anything. If anything, it's the carriers that are stupid for not adopting the same standard of using sim cards (Verizon and Sprint don't use sim cards..). I think they wanted to lock people in to their service.
I don't disagree...I've found the lack of GSM support on Verizon frustrating over the years. Unfortunately, Verizon effectively kills the competition for us in terms of coverage and price at a corporate level.