What the networks should be doing, instead of suing Replay, is to investigate business models that will allow them to offer content directly to Replay subscribers over the broadband link. Here they are complaining about how satellite dishes are robbing them of their over-the-air distribution channels, and here comes a piece of hardware that will allow them to send content to the homes directly again. All they'd need to do is play nice and work with SonicBlue instead of against them. They are so short-sighted.
As previously mentioned they are backing TiVo already. They've got their horse in the PVR race. It's a double standard but that's never stopped anyone before.