>If efforts like this are to be sustainable in any lasting way, participants need to be cooperative, not parasitic

that is an odd demand for a site that thrives on piracy. Don't steal from the thieves? When you take from others it's liberation, when others take from you it's parasitic, that's certainly a convenient coincidence

They steal it, but give everyone free access. You can download it for free, but can also torrent everything. They don't hoard for themselves, but everyone gets access to what they have. That is the crucial difference.

Only giving access to your material over downloads means that people have to pay if they want to get more of it. If those people don't share it then the material is going to be lost again.

Torrenting all the material slapping using their frontend as a base and just making money is different.