They should, but I'm sure (and i know of a couple) that only run one. and install a NID that controls everything.
They could do like they do on MDU typical- and put a metal box and everything be inside. One drop to the building. the metal box holds all the goodies.
But TWC - depending on the region- and if it was Adelphia or not before- will run 1 and split off that one outside.