Microsoft’s File Deduplication works really well. But I think they only enable it in Windows Server because it would truly cut PC profits in half if people didn’t run out of storage all the time.
Her largest digital asset is a gig of mp3s that are a copy of the Harry Potter audiobooks. Even that is "streamed" from my google drive. Even getting her into the hobby of "collecting steam games" hasn't put pressure on her 500gb hard drive, because she doesn't play modern AAA games.
People run out of storage on their phone from taking Video and Pictures but they don't ever copy those over to their PCs, if they even have PCs, they just buy more cloud storage space from Apple.
Normal people run out of storage on their 128GB SSD macOS devices all the time.