or Disney or NFL or any big corporate behemoth, they think they own everything and you can't do jack even with products you purchase. But asking Comcast or Disney about IP law is like asking a lion whether it owns the herd of passing zebras.
Sony thought taping TV shows was illegal and took it to the supreme court. I would not have stopped taping TV shows just because Sony thought it was illegal. My .02: if Comcast does not allow you to pay to watch the game on TV, they cannot complain when you look for a way to watch the game.