That's a different situation. The technology simply didn't exist for streaming video in the earlier iPhones. . . or iOS. . . that Xfinity takes advantage of to stream their signal. Nor was it in the original iPad. That was a later development in the graphic ability and band width capabilities. The hardware couldn't support it.
BTW, I am not interested in streaming. I am only interested in reading my email. I can probably find other email apps but I like the one from xfinity.
BTW, my android cell phone is 3 years old and the xfinity app runs great on it. And it is free! Also, I am finding that many apps that are free on android cost from Apple.