I'm not sure too many cards will have been affected. A month away from release and likely supplied in low quantities if the 4090 was anything to go by, there's not too many already built, and I imagine most manufacturers would have been smart enough to see something like this coming anyway. The boxes will likely be recycled to the 16GB version with a sticker covering the memory and specs, shrouds moved to the 16GB version as there would likely have been zero difference in size and style between the two, so overall this will cause little in the way of actual loss, but the projected loss, if nVidia lowers prices on it (doubtful, but AMD will decide that) is the biggest thing.