It's wishful thinking to suppose that corporations have a conscience or a desire to 'Do no Evil'. Sure you might get the occasional industry Titan who charts a benevolent course for their company but they will eventually be succeeded by time-serving executive seat-warmers beholden to no-one except the shareholders demanding bigger dividends. Given that market dynamic we should not be surprised at the Comcasts of the world insisting on their 'right' to discriminate against people who don't give them maximum revenue.
Comcast's recent success against the FCC's demand for net neutrality is indeed just the tip of the iceberg. I don't blame Comcast for trying to exploit their dominant position since they are just another soulless automaton trying to ensure their own economic survival in a 'dog-eat-dog' world.
However I will be mighty peeved if the lawmakers don't stop them.