It's a bit of a strange thing to say. At what level? Apple doesn't support lots of formats, neither does Microsoft, people can build tools in their apps to support them, and publish them, and hence new formats are born, that, although may have been created on a platform, the owner of that platform does not 'support' them.

As this is an open format, you can, or very likely, someone else, will write something to parse it on an apple platform, will Apple support it then?