Haha, true enough... but any real 100mbps connection would essentially kill DSL and cable's high end customers- hell, it'd be a threat to FiOS (which doesn't have 100mbps publicly available but likely will in a few years) if the prices are right.
Though, if LTE wireless offered enough speed, could at&t theoretically offer U-Verse IPTV over it, and wipe out their physical plant entirely?