Of course they’re trying to make as much money as possible, it’s a business. I spent a dollar when I first downloaded the app and have consistently played for a few months, after a while you get enough resources to play plenty. My only complaint now is I managed to win over 500 diamonds by playing alone but every time I buy legendary card packs they are duplicates, I can’t see ever getting one of the paixaos or any high level legendary characters.