Nothing needs to be replaced. It would be a tiny update to just display the correct unit. It’s a labeling issue, not a tech issue.
Exactly, we’ve been living in that world since day one. The problem is that existing prefixes with an existing meaning were misused. There are now correct prefixes defined that should be used instead.
All I’m arguing for is that windows simply displays GiB instead of GB. I’m not telling anyone to use the decimal units or calculations, I’m just saying, if you use the binary counting method, use the appropriate unit as well. Coincidentally, this means HDD manufacturers have been the only ones doing it right for years.