There are rules about banks -- they're supposed to lend to everyone. When they refuse to lend to residents of poor neighborhoods, that's called redlining.
But although there are laws prohibiting banks from denying services to poor people, there are no similar laws that apply to cable and power companies.
As a result, poor neighborhoods have power lines that run above ground; rich neighborhoods have lines safely buried underground. In high winds, poor neighborhoods suffer blackouts, but rich neighborhoods do not. The exception might appear to be floods -- in Sandy, both rich and poor neighborhoods suffered blackouts. But fires and blackouts were more likely in neighborhoods with above-ground power lines, as a look at news stories at the time shows.
Cable TV prices are regulated. There is a relatively cheap lowest tier (although the regulator is allowing actual costs to rise). Satellite is more expensive.
If you're on a street, and you see power lines that are above ground, and you see lots of satellite antennas and also rabbit ear antennas, you know that the people who reside on the street that you're on are paying high prices for TV service. You know that they're paying the same price for electric service as the richer neighborhoods that have superior electric service.
It's redlining, but it's legal.