Metro PCS currently offers some of the most aggressively priced voice and data plans in the country. If they are able to get a jump could start in the 4G market, they could push other major carriers to develop 4G technology and infrastructure of their own. Currently Sprint is the only carrier offering 4G plans, which utilize WiMAX technology instead of LTE. If Metro PCS is able to move into this market ahead of AT&T and Verizon, it could accelerate the downward trend in data plan pricing, all the while forcing those companies to invest more heavily in their own high-speed infrastructure.
Disclosure: Long S, Long PCS