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.