As producer Kathryn Dutchin pointed out the answer isn't a cut-and-dried, single-sentence explanation. When a long-running, extensive project like Stargate:Worlds begins to run into trouble, there are a lot of decisions to be made, questions to be answered, and problems to be sorted out, and it takes time. The ultimate goal is obviously to complete the project as originally intended, but there comes a point where the team is forced to say "This isn't going to happen. What next?"
"What next" in this case is Stargate: Resistance, but we'll wish CME the best of luck and continue keeping our fingers crossed for that MMO. The full interview is a must read for fans of either game, and can be found here.