They almost did: https://arstechnica.com/gadgets/2016/06/zfs-the-other-new-apple-file-system-that-almost-was-until-it-wasnt/ https://arstechnica.com/gadgets/201

They almost did: https://arstechnica.com/gadgets/2016/06/zfs-the-other-new-apple-file-system-that-almost-was-until-it-wasnt/ https://arstechnica.com/gadgets/2016/06/zfs-the-other-new-ap...