There's value in that only if assessments made by people using the prediction for something aren't better than crowd wisdom. I would guess that a large part of prediction market participants are simple gamblers whose assessment is worse than the prediction of someone doing it because they need the information for something.

So if people who need predictions for decision-making start relying on prediction markets with a lot of low value gambler predictions and opinion manipulators (wealthy participants can use the platform to mislead people as well) the value of these things might be negative.