There is occasional talk of moving the Windows implementation of OpenZFS (https://github.com/openzfsonwindows/openzfs/releases) into an officially supported tier, though that will probably come after the MacOS version…
Oracle changing the license would not make a huge difference to OpenZFS. Oracle only owns the copyright to the original Sun Microsystems code. It doesn’t apply to all ZFS implementations (probably not OracleZFS, perhaps…
There is occasional talk of moving the Windows implementation of OpenZFS (https://github.com/openzfsonwindows/openzfs/releases) into an officially supported tier, though that will probably come after the MacOS version…
Oracle changing the license would not make a huge difference to OpenZFS. Oracle only owns the copyright to the original Sun Microsystems code. It doesn’t apply to all ZFS implementations (probably not OracleZFS, perhaps…