Board Thread:General Discussion/@comment-24.90.5.202-20140128220833/@comment-6697950-20140911202232

Because you have to make the effort of ripping the video and subs and not many people want to bother with it. And you technically have no actual right to watch it, since it was a free gift included for those who purchased the DVDs/BDs and thus supported the series. No one is obligated to give you illegal freebies.