On regulatory sandboxes and future-proofing: How do you assess new tech impact?

Been reading up on various regulatory sandboxes popping up in different jurisdictions for fintech innovation. It makes sense for fostering growth, but I'm trying to wrap my head around how larger, established firms genuinely assess the long-term systemic risks of technologies incubated there, beyond the initial pilot phase. What's the practical approach to stress-testing these emerging models for broader adoption impact?