Can't say whether or not the Edge or other stations will pull away audience GR would have had with a deeper Sabres run into the playoffs. Apples and oranges, really. But GR's playoff audience will probably disperse, some to other stations all over the dial, but in large measure away from radio completely as people simply find other things to do with their time. Having said that, however, GR probably could have done something to give them a fighting chance to maintain somewhat more audience through the summer months before hockey season starts again. As it is now, it'll be a rough summer for WGR, partly for reasons beyond their control but partly of their own making.
The Yankees are heading into a temporary down cycle before their next quality pitching staff emerges (it'll probably come with the maturation of Phil Hughes and Tyler Clippard a year or two down the road). That is probably why 'GR didn't re-up, although it may not have been a wise move. The Blue Jays are the closest major league club but have no cross-border fan base to speak of, largely because they've never tried to build one and AFAIK haven't signed any US affiliates on their network. But if the GR brain trust was down on the Yankees and had no interest in the Jays, why not hook up with CBS and WFAN, and join the Mets network for selected games? That's a team that DOES have a fan base statewide, DOES have legitimate hopes for a World Series this year, and is seen regularly on cable all over the upstate region so its players are almost as familiar to listeners as the current Yankees. Or why not follow the ex-Bisons down the road and air select Cleveland Indians games on otherwise down nights? That's another contending team in a strong division (some say the strongest division in baseball) this year. So GR missed some chances to do some audience maintenance at low cost.
There are a couple of other reasons why GR may have seen its best rating days for a while. One, is that no one can be sure how good the Sabres' roster will look going into next year. Sure, they usually spend close to the cap maximum, but will they in 2007-08? And even if they do, will the expected 6 to 7 percent increase in the cap be enough to allow them to resign both their captains and all their key people? Or will the team be going into the coming season looking, at least initially, a lot weaker than they did last fall? That'll affect both ticket sales and early season ratings this fall, and won't change until/unless they go into December atop their division.
The second, is how strong the Bills will be and how much buzz they'll generate. The station actually carrying the games isn't formatically geared to take maximum advantage of any buzz that happens. But GR won't either, unless the team looks good enough in training camp and preseason games to get people thinking playoffs again for the first time since 1999. We won't have a sense of that until the eve of the regular season, and maybe not even until the end of September and the start of the fall book. So however good the Bills might look down the road, it won't help WGR much until at least week 4 or 5 of the regular season.