https://developers.google.com/games/services/android/antipir...
https://developers.google.com/games/services/android/antipir...
We released our game for iOS earlier this year and easily 80% of our users had pirated copies of the game.
Unless someone is doing something big or strategic to Apple (and random app piracy doesn't qualify, IMO), I just don't see it. Chasing "rogue" enterprise certs is all cost (time, effort, energy, risk of angering legitimate enterprise customers) for little to no benefit.
This post is about IAPs, but I assume the numbers for apps would be quite similar: http://www.gamasutra.com/blogs/AaronIsaksen/20121213/183519/...
The way to do it would be to give developers an API they can use on a server (something we've been asking for a while), but it doesn't look like that's going to happen.