Boring, high trust societies are conducive to risk taking. High trust reduces transaction costs. And people are more likely to take risks when they can trust the system under their feet is orderly, stable, and trustworthy.
You need LOW trust for risk taking.
I think in practice the conditions that lead to high trust societies forming also tend to lead to culturally valuing predictability which translates to a bias against risk. But that's not an inherent part of high trust rather that's just how things happen to be at a given point in time.