The issue I was pointing to is that a Canadian organization could create a book in an accessible format whose author or copyright holder is an American. We could not then exchange that with someone in Australia.
I think that's an issue. It's going to limit the number of books that could be sent to Australia and potentially they will match the same restrictions. Then someone from Australia couldn't create a book whose copyright holder is a citizen of the U.K. and send that Canada.
In general, I think it limits the sharing of alternative formats across borders.