Wireless War: Consumers win, investors lose

[Commentary] This is a great time for anyone looking for a new smartphone or tablet -- or to switch from one wireless carrier to another. That's because the big four US telecom companies are pummeling each other silly with price wars and discounts on new products. The wireless companies are now starting to behave like the airlines used to do. Remember when the airlines were all unprofitable messes moving in and out of bankruptcy? As long as Sprint and T-Mobile are cutting prices, that puts pressure on industry leaders Verizon and AT&T to do the same. Because let's be honest: Price is really the only major differentiating factor between the four.