From Facebooking Gen Yers to aging-in-place Boomers who want to video chat with their grandchildren, the broadband hunger among residents seems insatiable. Whether existing infrastructure is sizable enough to handle the data stream is up for debate, but fiber-optic network installers, including Cary, N.C.-based Connexion Technologies, are eager to get their systems—which they promise will ease the exaflood crisis—into multifamily buildings across the country. More