I don't know why everyone is making such a big fuss. Studios don't generally release movies of a particular television series that served as an official finale for very good reason, they don't consider it as part of the television series. If they did, then it would be included as part of the official season set. (Stargate SG-1, Stargate Atlantis, Battlestar Galactica, I Dream of Jeannie, Farscape, etc)
To put it plainly, Farscape the Complete Series is just that, the complete series. The title "The Complete Series" refers to the Television Series, not the movie. The movie isn't considered part of the television series. It is, after all, what the industry refers to as a telefilm or television movie not a television series.
Everyone assumes that The Peacekeeper Wars is a part of the television series. It really isn't. The television series was canceled with the fourth season. It just so happens that Jim Henson Productions decided to produce a telefilm event to conclude the cliffhanger left over from the television series.
This is why Star Trek Generations, First Contact, Insurrections and Nemesis isn't included with the Star Trek TNG Complete Series.