Been on my mind for some time, and I'd like other Jojo fans to help me out.
So it's often said that Giorno Giovanna somehow negated the universal reset that Pucci caused, thus protecting himself from his Stand. So, he was virtually unaffected by Stairway to Heaven. However, remember that GER's ability isn't specifically negating other abilities. Its actual ability is to "turn the opponent's actions or will to zero". In order for him to negate something, he has to do this to the opponent. We see GER doing this to Diavolo, hence why his King Crimson's time-skip/erasing got negated and reversed.
However, we know that Stairway to Heaven's universal acceleration/reset worked. And Pucci was alive throughout. Indeed, King Crimson and Stairway to Heaven's may involve time acceleration/skipping at an universal level, but Stairway to Heaven is still at a far higher level than King Crimson, plus hyped to be the ultimate Stand. Furthermore, while Diavolo was like within a few feet of GER/Giorno, Giorno was nowhere to be seen anywhere near Pucci or the Jojo cast, even though he was suggested to be somewhere in Florida.
If Pucci's ability worked, then that must mean that Giorno had no defense against Stairway to Heaven and was subject to the universal reset like everyone else.
This would mean that GER actually does have limited range in that any Stand user that is not within his sights simply cannot be affected to GER's "zero" ability.