If superintelligence emerges soon, we may not even know which technologies will emerge and how many will be unleashed in the next 2 decades.
ADDED: Examples of some concrete predictions:
(1980) https://en.wikipedia.org/wiki/The_Third_Wave_(Toffler_book)
(1995) https://en.wikipedia.org/wiki/The_Road_Ahead_(Gates_book)
Obviously, specifics differ from predictions and plenty of people got it wrong. Many good forecasters got the broad strokes right though.
Which forecasters can even predict most technologies that would be invented after ASI emerges?