Comment by xp84

Let me clarify, I don't expect two vendors like that to merge filesystem specs. I just think they should have first-class support for reading and writing on each others' default (NTFS and APFS) filesystems because the alternative is that a user who has a hard drive full of their important documents can't switch between Mac and PC without buying 100% more storage with which to do a complicated filesystem-migration exercise -- and let's be honest, only an absolute nerd (like us) would even understand what that is. Others would just plug in the NTFS disk to the Mac, see the popup saying "unreadable," shrug and give up (or worst case, format it not understanding that means erasing).

This is the kind of thing a reasonable government would just tell them they had to do by virtue of being a fully locked-in duopoly, just like they should tell Apple and Google that users should be able to choose to install an alternat app store.