I think people should really use Hanlon razor here, frankly, Kissmanga downfall was because they were stupid, not some machinations of something great, much like Mangarock case. Kissmanga host the image on blogspot, which is google which they use to cut cost, and this is google we are talking about so like many said, it's actually a miracle they even managed to survive this long. Mangarock is the same, the premium system was clearly an attempt at making profit on scanlations that they don't make or own, which actually put them deep in legal sides issues that can be proven.