This is more an old vs new than rich vs poor. Verizon Fios is my example here. In the "old neighborhood" in NYC I grew up in, they never got Fios. But in the "new" neighborhoods, seems like every house got it. The thing is, this particular old neighborhood was quite wealthy, with mostly row houses anchored by non-section 8 high rises. The demographic was Russian Jews who escaped the Soviet Union, and 2nd generation Carribean island Hispanics who moved up from lesser neighborhoods. Either way the apartments all go for 2k+ now, and the 80 year old row houses easily go for a cool million (even with the restriction that they cannot be knocked down or have their facade significantly altered). Yet no Fios.
Meanwhile, you can get Fios with a $150,000 house (1500 sqft) on a 1 acre lot up here in buttfuck nowhere. But the old neighborhood which includes the governor's mansion does not get Fios.