The world's dominant retailer has been facing a tidal wave of negativity--from community activists trying to keep its stores out of their neighborhoods, to local governments mandating that Wal-Mart supply workers with health insurance, to opportunistic lawyers trying to strike it rich by bringing on endless lawsuits.
That means that they will be stuck with GSM, and they will miss out on the next wave of mobile development and the economic development it could promote, especially if 3G becomes dominant in the developed world.