Steam also offers a more substantial service. They have fairly significant social services from chat to profiles to the ability to join a friend's game right f

Steam also offers a more substantial service. They have fairly significant social services from chat to profiles to the ability to join a friend's game right from Steam. The downloads are also usually substantially larger (although the average price is also significantly higher). The same is true of most of the desktop game stores. I don't know what the real pricing should be, but I can't see how the pricing for something like Google's games would match up against Steam. They don't have feature parity, and some of the features they have are way less useful on mobile. E.g. I wouldn't use their chat even if it existed; my phone already has 4 or 5 messengers.