Isn't the question you're posing basically Pascals wager?

I think the chance they're going to create a "superintelligence" is extremely small. That said I'm sure we're going to have a lot of useful intelligence. But nothing general or self-conscious or powerful enough to be threatening for many decades or even ever.

> Predicting the future is famously difficult

That's very true, but that fact unfortunately can never be used to motivate any particular action, because you can always say "what if the real threat comes from a different direction?"

We can come up with hundreds of doomsday scenarios, most don't involve AI. Acting to minimize the risk of every doomsday scenario (no matter how implausible) is doomsday scenario no. 153.