Cox did start offering service in my area, likely as an MVNO. It's one of the providers I want to investigate.

Rob's comments basically lit up the idea, now I need to do the research and crunch the numbers. I'm much more comfortable with the idea now then I was a few years ago, mostly due to Apple offering unlocked iPhones in the US. I don't have to worry about the potential support issues with an imported device, nor do I have to jailbreak either. Being able to support both CDMA and GSM is also a big plus, since it opens up a lot more possibilities.