It's never been open for bid to anyone else, and I seriously doubt it will ever be, as it is something Comcast put together way back as a sales tool. They pitched it to Tribune, not the other way around, and put together a huge subscriber campaign when it first rolled out. It only very recently came to RCN cable after a ridiculously long drawn out process. Comcast has a standing contract that pretty much guarantees them exclusivity for cable to nearly the entire Chicago area, and they are always looking for any angle to lockout other providers, especially satellite that they have no legal way to block.
And that was my point, in that it wouldn't surprise me that they have some influence at Tribune in this mess. Comcast has got to be jumping for joy over there at this lockout.