There are lots of articles (including some on MR) about developers who made a game that requires server-side. And the number of users accessing the server was nowhere close to the number of people who bought their apps.
Do they factor in people that buy the app and then share it with family/friends by way of the 5 device limit? Not saying piracy didn't cause it, but I wonder if they factored that in or jumped straight to piracy. If the pricey thing was the case, I'd believe they'd have a way to block those devices from accessing their servers.