On the other hand I have a few examples in my collection, where the series was not continued. Dharma & Greg for example.
I even have a series in my collection, which did get another chance by another label a few years later. "Once & Again": First season was released in 2002 and then nothing. In 2005 another label re-released season 1 and already had dates for season 2 and 3. Only season 2 made the release but the third and final season hasn't been released to date
Even though this final season would now have star power behind it, because Mischa Barton was a regular guest star that season.