As has been reported before, they "killed" TNG for business reasons. The show was getting increasingly expensive to produce and adding more episodes to a series that had run 7 years wasn't going to add significantly to its value especially given those rising costs.
Paramount not only killed TNG, they also damaged the last season of the show. They moved all the best writers over to DS9. They had Moore and Braga distracted with the Generations script instead of having them focusing on TNG S7 like they should have. S7 suffers so much because they rushed Generations. That garbage movie wasn't even worth it.
Very glad CBS now controls Trek on television.