I use a trick with co-workers when we’re trying to decide where to eat for lunch and no one has any ideas. I recommend McDonald’s.This. Most definitely this.
An interesting thing happens. Everyone unanimously agrees that we can’t possibly go to McDonald’s, and better lunch suggestions emerge. Magic!
Next time a stakeholder won't give you an answer, consider giving them one. Make it a bad one. So stinky it almost runs them out of the room. Watch them trip over themselves to try and give you the answer you wanted in the first place. Love it.