The way games work has changed pretty fundamentally in the last 20 years. The dominant business model these days is that you give the game itself way free, or very cheaply and then rely on in game purchasers to make all your money. And too, because you're always connected, the developers can get back loads of data about how people are playing their games. That gives them the ability to tweak the design in such a way that you're likely to spend as much time, and therefore as much money as possible on these products.