> Why else would MS not support BTRFS/ZFS/Ext or whatever?
You seriously can’t think of another reason? File systems are complex. Maintenance is a huge burden. Getting them wrong is a liability. Reason enough to only support the bare minimum. And then, 99% of their users don’t care about any of those. NTFS is good enough
In my mind, in the year 2026, I don't really see the point in using a non-CoW filesystem; it would be nice if the Windows System Restore tool actually worked, and that could be achieved much simpler if there were filesystem-level snapshots.
You seriously can’t think of another reason? File systems are complex. Maintenance is a huge burden. Getting them wrong is a liability. Reason enough to only support the bare minimum. And then, 99% of their users don’t care about any of those. NTFS is good enough