Animebytes is a torrent site, they don't host any of that, that's how torrents work. All they host is tiny .torrent files, the actual files are all hosted by users on their own computers and distributed between Bittorrent clients. That's why torrents need to be seeded by users, that's why old unpopular torrents can die, that's why private trackers like AnimeBytes often have some sort of minimum ratio required.