Not really, many of mobile games are f2p games, so piracy is actually preferred.
What makes android difficult platform to develop on is all sorts of device fragmentation.

Especially screen resolution and dimension can be a huge hindrance when developing user interface and you want it to look good on all devices. Sure you could create custom ui for all devices, but then updating the game on all platforms would take tremendous amount of work. Not to mention how some devices have piss poor resolution or screen-size.

Then there's the fact that there are plenty of studios there that are NOT using 3rd party game engine like Unity. For whatever reason that may be, it's one of the things that will make porting game to a certain platform a lot more time consuming -> expensive.