A cellular service provider can't just start offering service anywhere they wish. They have to purchase frequency spectrum space for their use from the FCC at auctions. That costs big $ and there is not much available. Most providers that have losts of coverage got that way by purchacing smaller companies and getting rights to frequency use along with it. Verizon, Alltel, are good examples of this. cricKet slowly but surely buying frequency rights as it becomes available. Whenever you see "comming soon to ......." you know that they bought more and have the network functional.