> For political reasons, to avoid supporting DRM. This is very much a practical reason as well, though this overlaps with "not available in a usable form". DRM

> For political reasons, to avoid supporting DRM. This is very much a practical reason as well, though this overlaps with "not available in a usable form". DRM is the reason I can't watch movies at the highest bitrates and resolutions on my device from Netflix or Amazon. It's the reason I can't trust that things I purchase will be available to me indefinitely. It's the reason I can't build a collection of media (e.g. with Kodi) that is playable on my TV with one click with a single unifying interface. > The product is not offered for sale. This extends to some other cases as well. For instance, where the only available version is a crappy remaster (Terminator 2), and the original is much superior. Or if you want to watch the film with a director's commentary. There's also, very broadly, a 4th reason - convenience. This encompasses both ease of use (if I know what movie I want to watch, I don't have to search to see where it's streaming), and discoverability (a good torrent site will easily let you see all the movies by a director or actor, and provide recommendations). Or if you're looking for a particular special feature, it's much more convenient to be able to download it than to go looking for a physical media copy and wait for it to be shipped to your door.