Blazers never sued Comcast, they looked at their legal alternatives.
Problem is that the contract required a certain # of households and with the Supersonics moving out, NBA gave Seattle territory to the Blazers, and Comcast added the channel to their Seattle systems and met the # of households requirement in the contract. End of discussion, there isn't anything they can do.
Ironically Directv owned Root Sports reportedly charges more per viewer than what Comcast has asked for. Really both competing channels have part-time content - Comcast has the Blazers and Root has the Mariners. Neither has much else beyond that.
So if Sacramento Kings move to Seattle we can hear about an agreement in the works "any minute" now.......