KiB, MiB, GiB etc are more clear. It makes a big difference especially 1TB vs 1TiB.
The American way would probably be still using the units you listed but still meaning 1024, just to be confusing.
Either that or maybe something that uses physical measurement of a hard-drive (or CD?) using length. Like that new game is 24.0854 inches of data (maybe it could be 1.467 miles of CD?).
As far as I know, RAM only comes in GiB sizes. There is some overhead that reduces the amount you see in the OS though. But that complaint is valid for storage devices if you don’t know the units and expect TB/GB on the box to match the numbers in Windows