IIRC they have an app-list at the bottom of each of their games, that they can use to introduce users to any new creation. I assume they probably have ads up as

IIRC they have an app-list at the bottom of each of their games, that they can use to introduce users to any new creation. I assume they probably have ads up as well. Copying enables them to make a game that has already been proved and simply leverage their existing user base to get views. Other companies do their research for them. I think their ability to leverage their user base explains them getting 'greater success'. What could go wrong? They could make a bad copy, but they already should have enough in-house skill to make the suckiest game pretty polished. They have tons of reusable code. Tons of cash. They could copy a game but miss out on some secret sauce that makes the original work better. I think they can control this by releasing to smaller groups and fixing mistakes early, or just dump a game if there's no traction. So...what else could go wrong when copying a game?